diff --git a/.eslintrc b/.eslintrc
index ac35bb10..fa3aca98 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -32,10 +32,10 @@
         "react/wrap-multilines": 1
     },
     "globals": {
-        "Raven": true,
         "Intercom": true,
-        "fetch": true
-    }
+        "fetch": true,
+        "require": true
+    },
     "plugins": [
         "react"
     ],
diff --git a/index.html b/index.html
index 39ebca26..a70a70db 100644
--- a/index.html
+++ b/index.html
@@ -51,9 +51,6 @@
             ga('create', 'UA-60614729-2', 'auto');
         </script>
 
-        <!-- Logging for sentry -->
-        <script src="//cdn.ravenjs.com/1.1.19/raven.min.js"></script>
-
         <!-- Intercom library -->
         <script>
             (function(){var w=window;var ic=w.Intercom;if(typeof ic==="function"){ic('reattach_activator');ic('update',intercomSettings);}else{var d=document;var i=function(){i.c(arguments)};i.q=[];i.c=function(args){i.q.push(args)};w.Intercom=i;function l(){var s=d.createElement('script');s.type='text/javascript';s.async=true;
diff --git a/js/actions/application_actions.js b/js/actions/application_actions.js
index 33932ebd..733746cf 100644
--- a/js/actions/application_actions.js
+++ b/js/actions/application_actions.js
@@ -17,7 +17,7 @@ class ApplicationActions {
                 this.actions.updateApplications(res.applications);
             })
             .catch((err) => {
-                console.log(err);
+                console.logGlobal(err);
             });
     }
     refreshApplicationToken(applicationName) {
@@ -26,7 +26,7 @@ class ApplicationActions {
                 this.actions.updateApplications(res.applications);
             })
             .catch((err) => {
-                console.log(err);
+                console.logGlobal(err);
             });
     }
 }
diff --git a/js/actions/coa_actions.js b/js/actions/coa_actions.js
index ed8971d3..728c6ad2 100644
--- a/js/actions/coa_actions.js
+++ b/js/actions/coa_actions.js
@@ -17,7 +17,7 @@ class CoaActions {
                 this.actions.updateCoa(res.coa);
             })
             .catch((err) => {
-                console.log(err);
+                console.logGlobal(err);
             });
     }
     create(edition) {
@@ -26,7 +26,7 @@ class CoaActions {
                 this.actions.updateCoa(res.coa);
             })
             .catch((err) => {
-                console.log(err);
+                console.logGlobal(err);
             });
     }
 }
diff --git a/js/actions/edition_actions.js b/js/actions/edition_actions.js
index 07fcab1d..473da0e4 100644
--- a/js/actions/edition_actions.js
+++ b/js/actions/edition_actions.js
@@ -17,7 +17,7 @@ class EditionActions {
                 this.actions.updateEdition(res.edition);
             })
             .catch((err) => {
-                console.log(err);
+                console.logGlobal(err);
             });
     }
 }
diff --git a/js/actions/edition_list_actions.js b/js/actions/edition_list_actions.js
index 641c5b01..0ab07b34 100644
--- a/js/actions/edition_list_actions.js
+++ b/js/actions/edition_list_actions.js
@@ -45,7 +45,6 @@ class EditionListActions {
                 })
                 .catch((err) => {
                     reject(err);
-                    //console.log(err);
                 });
         });
         
diff --git a/js/actions/license_actions.js b/js/actions/license_actions.js
index 358c158a..bfeacd34 100644
--- a/js/actions/license_actions.js
+++ b/js/actions/license_actions.js
@@ -17,7 +17,7 @@ class LicenseActions {
                 this.actions.updateLicenses(res.licenses);
             })
             .catch((err) => {
-                console.log(err);
+                console.logGlobal(err);
             });
     }
 }
diff --git a/js/actions/loan_contract_actions.js b/js/actions/loan_contract_actions.js
index 54405810..9757c2a2 100644
--- a/js/actions/loan_contract_actions.js
+++ b/js/actions/loan_contract_actions.js
@@ -32,7 +32,7 @@ class LoanContractActions {
                     }
                 })
                 .catch((err) => {
-                    console.error(err);
+                    console.logGlobal(err);
                     this.actions.updateLoanContract({
                         contractKey: null,
                         contractUrl: null,
diff --git a/js/actions/piece_actions.js b/js/actions/piece_actions.js
index d52b8d43..e3a41f93 100644
--- a/js/actions/piece_actions.js
+++ b/js/actions/piece_actions.js
@@ -18,7 +18,7 @@ class PieceActions {
                 this.actions.updatePiece(res.piece);
             })
             .catch((err) => {
-                console.log(err);
+                console.logGlobal(err);
             });
     }
 }
diff --git a/js/actions/piece_list_actions.js b/js/actions/piece_list_actions.js
index 3c5b44d2..390dfb98 100644
--- a/js/actions/piece_list_actions.js
+++ b/js/actions/piece_list_actions.js
@@ -53,7 +53,8 @@ class PieceListActions {
             .fetchRequestActions()
             .then((res) => {
                 this.actions.updatePieceListRequestActions(res.piece_ids);
-            });
+            })
+            .catch((err) => console.logGlobal(err));
     }
 }
 
diff --git a/js/actions/user_actions.js b/js/actions/user_actions.js
index 65f51d35..b1a006bc 100644
--- a/js/actions/user_actions.js
+++ b/js/actions/user_actions.js
@@ -18,7 +18,7 @@ class UserActions {
                 this.actions.updateCurrentUser(res.users[0]);
             })
             .catch((err) => {
-                console.log(err);
+                console.logGlobal(err);
                 this.actions.updateCurrentUser({});
             });
     }
@@ -28,7 +28,7 @@ class UserActions {
                 this.actions.deleteCurrentUser();
             })
             .catch((err) => {
-                console.log(err);
+                console.logGlobal(err);
             });
     }
 }
diff --git a/js/actions/wallet_settings_actions.js b/js/actions/wallet_settings_actions.js
index 48c8555f..11a21631 100644
--- a/js/actions/wallet_settings_actions.js
+++ b/js/actions/wallet_settings_actions.js
@@ -17,7 +17,7 @@ class WalletSettingsActions {
                 this.actions.updateWalletSettings(res.wallet_settings);
             })
             .catch((err) => {
-                console.log(err);
+                console.logGlobal(err);
             });
     }
 }
diff --git a/js/actions/whitelabel_actions.js b/js/actions/whitelabel_actions.js
index 28d95cb9..41ab1421 100644
--- a/js/actions/whitelabel_actions.js
+++ b/js/actions/whitelabel_actions.js
@@ -14,10 +14,14 @@ class WhitelabelActions {
     fetchWhitelabel() {
         WhitelabelFetcher.fetch()
             .then((res) => {
-                this.actions.updateWhitelabel(res.whitelabel);
+                if(res && res.whitelabel) {
+                    this.actions.updateWhitelabel(res.whitelabel);
+                } else {
+                    this.actions.updateWhitelabel({});
+                }
             })
             .catch((err) => {
-                console.log(err);
+                console.logGlobal(err);
             });
     }
 }
diff --git a/js/app.js b/js/app.js
index 0fc0c191..13aa38a5 100644
--- a/js/app.js
+++ b/js/app.js
@@ -14,6 +14,9 @@ import getRoutes from './routes';
 import requests from './utils/requests';
 
 import { getSubdomainSettings } from './utils/constants_utils';
+import { initLogging } from './utils/error_utils';
+
+initLogging();
 
 let headers = {
     'Accept': 'application/json',
@@ -25,18 +28,10 @@ requests.defaults({
     http: {
         headers: headers,
         credentials: 'include'
-    },
-    fatalErrorHandler: (err) => {
-        console.log(err);
     }
 });
 
-Raven.config('https://0955da3388c64ab29bd32c2a429f9ef4@app.getsentry.com/48351', {
-    // pass along the version of your application
-    release: '1.0.0'
-}).install();
 
-window.onerror = Raven.process;
 
 class AppGateway {
 
@@ -52,12 +47,13 @@ class AppGateway {
         } catch(err) {
             // if there are no matching subdomains, we're routing
             // to the default frontend
+            console.logGlobal(err);
             this.load('default');
         }
     }
 
     load(type) {
-        Router.run(getRoutes(type), Router.HistoryLocation, (App, state) => {
+        Router.run(getRoutes(type), Router.HistoryLocation, (App) => {
             if (window.ga) {
                 window.ga('send', 'pageview');
             }
@@ -71,3 +67,4 @@ class AppGateway {
 
 let ag = new AppGateway();
 ag.start();
+
diff --git a/js/components/ascribe_accordion_list/accordion_list_item.js b/js/components/ascribe_accordion_list/accordion_list_item.js
index 54d19078..00235d96 100644
--- a/js/components/ascribe_accordion_list/accordion_list_item.js
+++ b/js/components/ascribe_accordion_list/accordion_list_item.js
@@ -117,7 +117,7 @@ let AccordionListItem = React.createClass({
 
     getLicences() {
         // convert this to acl_view_licences later
-        if (this.state.whitelabel.name === 'Creative Commons France') {
+        if (this.state.whitelabel && this.state.whitelabel.name === 'Creative Commons France') {
             return (
                 <span>
                     <span>, </span>
diff --git a/js/components/ascribe_forms/form.js b/js/components/ascribe_forms/form.js
index 057c1d53..87f26cb3 100644
--- a/js/components/ascribe_forms/form.js
+++ b/js/components/ascribe_forms/form.js
@@ -80,6 +80,7 @@ let Form = React.createClass({
         this.setState({edited: false, submitted: false});
     },
     handleError(err){
+        console.log(err);
         if (err.json) {
             for (var input in err.json.errors){
                 if (this.refs && this.refs[input] && this.refs[input].state) {
@@ -90,7 +91,7 @@ let Form = React.createClass({
             }
         }
         else {
-            console.error(err);
+            console.logGlobal(err);
             this.setState({errors: [getLangText('Something went wrong, please try again later')]});
         }
         this.setState({submitted: false});
diff --git a/js/components/ascribe_uploader/react_s3_fine_uploader.js b/js/components/ascribe_uploader/react_s3_fine_uploader.js
index 5e86d043..e6c5cb20 100644
--- a/js/components/ascribe_uploader/react_s3_fine_uploader.js
+++ b/js/components/ascribe_uploader/react_s3_fine_uploader.js
@@ -1,6 +1,7 @@
 'use strict';
 
 import React from 'react/addons';
+import Raven from 'raven-js';
 
 import { getCookie } from '../../utils/fetch_api_utils';
 import { getLangText } from '../../utils/lang_utils';
@@ -270,7 +271,7 @@ var ReactS3FineUploader = React.createClass({
         })
         .catch((err) => {
             defer.failure(err);
-            console.error(err);
+            console.logGlobal(err);
         });
         return defer;
     },
diff --git a/js/components/global_notification.js b/js/components/global_notification.js
index aefe525a..59663b28 100644
--- a/js/components/global_notification.js
+++ b/js/components/global_notification.js
@@ -53,6 +53,11 @@ let GlobalNotification = React.createClass({
     onChange(state) {
         let notification = this.extractFirstElem(state.notificationQue);
 
+        // error handling for notifications
+        if(notification.message && notification.type === 'danger') {
+            console.logGlobal(new Error(notification.message.message));
+        }
+
         if(notification.show) {
             this.setState(notification);
         } else {
diff --git a/js/components/header.js b/js/components/header.js
index b892bb5d..f899def8 100644
--- a/js/components/header.js
+++ b/js/components/header.js
@@ -2,6 +2,7 @@
 
 import React from 'react';
 import Router from 'react-router';
+import Raven from 'raven-js';
 
 import UserActions from '../actions/user_actions';
 import UserStore from '../stores/user_store';
@@ -59,14 +60,14 @@ let Header = React.createClass({
                 <span>ascribe </span>
                 <span className="glyph-ascribe-spool-chunked ascribe-color"></span>
             </span>);
-        if (this.state.whitelabel.logo){
+        if (this.state.whitelabel && this.state.whitelabel.logo){
             logo = <img className="img-brand" src={this.state.whitelabel.logo} />;
         }
         return logo;
     },
 
     getPoweredBy(){
-        if (this.state.whitelabel.logo) {
+        if (this.state.whitelabel && this.state.whitelabel.logo) {
             return (
                 <li>
                     <a className="pull-right" href="https://www.ascribe.io/" target="_blank">
diff --git a/js/components/register_piece.js b/js/components/register_piece.js
index 58518ab9..37d496a8 100644
--- a/js/components/register_piece.js
+++ b/js/components/register_piece.js
@@ -142,7 +142,7 @@ let RegisterPiece = React.createClass( {
     },
 
     getSpecifyEditions() {
-        if(this.state.whitelabel.acl_editions || Object.keys(this.state.whitelabel).length === 0) {
+        if(this.state.whitelabel && this.state.whitelabel.acl_editions || Object.keys(this.state.whitelabel).length === 0) {
             return (
                 <PropertyCollapsible
                     name="num_editions"
diff --git a/js/constants/application_constants.js b/js/constants/application_constants.js
index ec290f4b..3d3db820 100644
--- a/js/constants/application_constants.js
+++ b/js/constants/application_constants.js
@@ -14,6 +14,7 @@ let constants = {
                 'acl_loan', 'acl_share', 'acl_transfer', 'acl_unconsign', 'acl_unshare', 'acl_view',
                 'acl_withdraw_transfer'],
 
+    'version': 0.1,
     'csrftoken': 'csrftoken2',
     'subdomains': [
         {
@@ -47,7 +48,10 @@ let constants = {
     ],
 
     // in case of whitelabel customization, we store stuff here
-    'whitelabel': {}
+    'whitelabel': {},
+    'raven': {
+        'url': 'https://0955da3388c64ab29bd32c2a429f9ef4@app.getsentry.com/48351'
+    }
 };
 
 export default constants;
diff --git a/js/fetchers/edition_list_fetcher.js b/js/fetchers/edition_list_fetcher.js
index 6365a4be..94a2116d 100644
--- a/js/fetchers/edition_list_fetcher.js
+++ b/js/fetchers/edition_list_fetcher.js
@@ -11,9 +11,9 @@ let EditionListFetcher = {
      */
     fetch(pieceId, page, pageSize, orderBy, orderAsc) {
         let ordering = generateOrderingQueryParams(orderBy, orderAsc);
-        return requests.get('editions_list', { 
+        return requests.get('editions_list', {
             'piece_id': pieceId,
-            page, 
+            page,
             pageSize,
             ordering
         });
diff --git a/js/stores/edition_list_store.js b/js/stores/edition_list_store.js
index c7fdf52c..12835603 100644
--- a/js/stores/edition_list_store.js
+++ b/js/stores/edition_list_store.js
@@ -87,7 +87,7 @@ class EditionListStore {
                 this.editionList[pieceId].pageSize = prevEditionListPageSize;
             })
             .catch((err) => {
-                console.error(err);
+                console.logGlobal(err);
             });
     }
 
diff --git a/js/utils/api_urls_utils.js b/js/utils/api_urls_utils.js
deleted file mode 100644
index e69de29b..00000000
diff --git a/js/utils/error_utils.js b/js/utils/error_utils.js
new file mode 100644
index 00000000..4e9de6e2
--- /dev/null
+++ b/js/utils/error_utils.js
@@ -0,0 +1,39 @@
+'use strict';
+
+import Raven from 'raven-js';
+
+import AppConstants from '../constants/application_constants';
+
+
+/**
+ * Logs an error in to the console but also sends it to
+ * Sentry.
+ * Optionally, a comment can be defined.
+ * @param  {Error} error    a Javascript error
+ * @param  {boolean} ignoreSentry Defines whether or not the error should be submitted to Sentry
+ * @param  {string} comment  Will also be submitted to Sentry, but will not be logged
+ */
+function logGlobal(error, ignoreSentry, comment) {
+
+    console.error(error);
+
+    if(!ignoreSentry) {
+        if(comment) {
+            Raven.captureException(error, {extra: { comment }});
+        } else {
+            Raven.captureException(error);
+        }
+    }
+    
+}
+
+export function initLogging() {
+    // Initialize Raven for logging on Sentry
+    Raven.config(AppConstants.raven.url, {
+        release: AppConstants.version
+    }).install();
+
+    window.onerror = Raven.process;
+
+    console.logGlobal = logGlobal;
+}
\ No newline at end of file
diff --git a/js/utils/general_utils.js b/js/utils/general_utils.js
index e74c1e6f..00f1da2c 100644
--- a/js/utils/general_utils.js
+++ b/js/utils/general_utils.js
@@ -114,6 +114,10 @@ export function mergeOptions(...l) {
 }
 
 /**
+ * Merges a number of objects even if there're having duplicates.
+ *
+ * DOES NOT RETURN AN ERROR!
+ *
  * Takes a list of object and merges their keys to one object.
  * Uses mergeOptions for two objects.
  * @param  {[type]} l [description]
diff --git a/js/utils/requests.js b/js/utils/requests.js
index e66c8ad5..8494a90f 100644
--- a/js/utils/requests.js
+++ b/js/utils/requests.js
@@ -1,11 +1,8 @@
 'use strict';
 
 import { argsToQueryParams, getCookie } from '../utils/fetch_api_utils';
-import AppConstants from '../constants/application_constants';
 
-class UrlMapError extends Error {}
-class ServerError extends Error {}
-class APIError extends Error {}
+import AppConstants from '../constants/application_constants';
 
 
 class Requests {
@@ -22,39 +19,47 @@ class Requests {
 
     unpackResponse(response) {
         if (response.status >= 500) {
-            throw new ServerError();
-        } else if(response.status === 403) {
-            Raven.captureException('csrftoken error');
+            throw new Error(response.status + ' - ' + response.statusText + ' - on URL:' + response.url);
         }
-        return response.text();
+
+        return new Promise((resolve, reject) => {
+            response.text()
+                .then((responseText) => {
+                    // If the responses' body does not contain any data,
+                    // fetch will resolve responseText to the string 'None'.
+                    // If this is the case, we can not try to parse it as JSON.
+                    if(responseText !== 'None') {
+                        let body = JSON.parse(responseText);
+                        
+                        if(body && body.errors) {
+                            let error = new Error('Form Error');
+                            error.json = body;
+                            reject(error);
+                        } else {
+                            resolve(body);
+                        }
+
+                    } else {
+                        if(response.status >= 400) {
+                            reject(new Error(response.status + ' - ' + response.statusText + ' - on URL:' + response.url));
+                        } else {
+                            resolve({});
+                        }
+                    }
+                }).catch((err) => {
+                    reject(err);
+                });
+            });
     }
 
-    customJSONparse(responseText) {
-        // If the responses' body does not contain any data,
-        // fetch will resolve responseText to the string 'None'.
-        // If this is the case, we can not try to parse it as JSON.
-        if(responseText !== 'None') {
-            return JSON.parse(responseText);
+    handleError(err) {
+        if (err instanceof TypeError) {
+            throw new Error('Server did not respond to the request. (Not even displayed a 500)');
         } else {
-            return {};
+            throw err;
         }
     }
 
-    handleFatalError(err) {
-        this.fatalErrorHandler(err);
-        throw new ServerError(err);
-    }
-
-    handleAPIError(json) {
-        if (json.success === false) {
-            let error = new APIError();
-            error.json = json;
-            //console.error(new Error('The \'success\' property is missing in the server\'s response.'));
-            throw error;
-        }
-        return json;
-    }
-
     getUrl(url) {
         // Handle case, that the url string is not defined at all
         if (!url) {
@@ -65,7 +70,7 @@ class Requests {
         if (!url.match(/^http/)) {
             url = this.urlMap[url];
             if (!url) {
-                throw new UrlMapError(`Cannot find a mapping for "${name}"`);
+                throw new Error(`Cannot find a mapping for "${name}"`);
             }
         }
         
@@ -107,11 +112,10 @@ class Requests {
             merged.headers['X-CSRFToken'] = csrftoken;
         }
         merged.method = verb;
+
         return fetch(url, merged)
                     .then(this.unpackResponse)
-                    .then(this.customJSONparse)
-                    .catch(this.handleFatalError.bind(this))
-                    .then(this.handleAPIError);
+                    .catch(this.handleError);
     }
 
     get(url, params) {
@@ -143,7 +147,6 @@ class Requests {
     defaults(options) {
         this.httpOptions = options.http || {};
         this.urlMap = options.urlMap || {};
-        this.fatalErrorHandler = options.fatalErrorHandler || (() => {});
     }
 }
 
diff --git a/package.json b/package.json
index d0c48b83..bac4a421 100644
--- a/package.json
+++ b/package.json
@@ -69,6 +69,7 @@
     "jest-cli": "^0.4.0",
     "lodash": "^3.9.3",
     "object-assign": "^2.0.0",
+    "raven-js": "^1.1.19",
     "react": "^0.13.2",
     "react-bootstrap": "~0.22.6",
     "react-datepicker": "~0.8.0",
diff --git a/sass/ascribe-global-notification.scss b/sass/ascribe_global_notification.scss
similarity index 100%
rename from sass/ascribe-global-notification.scss
rename to sass/ascribe_global_notification.scss
diff --git a/sass/main.scss b/sass/main.scss
index e9c742b4..9fab6aeb 100644
--- a/sass/main.scss
+++ b/sass/main.scss
@@ -21,7 +21,7 @@ $BASE_URL: '<%= BASE_URL %>';
 @import 'ascribe_media_player';
 @import 'ascribe_uploader';
 @import 'ascribe_footer';
-@import 'ascribe-global-notification';
+@import 'ascribe_global_notification';
 @import 'ascribe_piece_register';
 @import 'offset_right';
 @import 'ascribe_settings';