Show insufficient funds on confirm screen on first render.

ui/app/components/pending-tx/confirm-send-ether.js

@@ -103,6 +103,18 @@ function ConfirmSendEther () {
   this.onSubmit = this.onSubmit.bind(this)
 }
 
+ConfirmSendEther.prototype.componentWillMount = function () {
+  const { updateSendErrors } = this.props
+  const txMeta = this.gatherTxMeta()
+  const balanceIsSufficient = this.isBalanceSufficient(txMeta)
+
+  updateSendErrors({
+    insufficientFunds: balanceIsSufficient
+      ? false
+      : this.props.t('insufficientFunds')
+  })
+}
+
 ConfirmSendEther.prototype.getAmount = function () {
   const { conversionRate, currentCurrency } = this.props
   const txMeta = this.gatherTxMeta()

ui/app/components/pending-tx/confirm-send-token.js

@@ -142,12 +142,20 @@ function ConfirmSendToken () {
 }
 
 ConfirmSendToken.prototype.componentWillMount = function () {
-  const { tokenContract, selectedAddress } = this.props
+  const { tokenContract, selectedAddress, updateSendErrors} = this.props
+  const txMeta = this.gatherTxMeta()
+  const balanceIsSufficient = this.isBalanceSufficient(txMeta)
   tokenContract && tokenContract
     .balanceOf(selectedAddress)
     .then(usersToken => {
     })
   this.props.updateTokenExchangeRate()
+
+  updateSendErrors({
+    insufficientFunds: balanceIsSufficient
+      ? false
+      : this.props.t('insufficientFunds')
+  })
 }
 
 ConfirmSendToken.prototype.getAmount = function () {