The error dialog doesn't get prompted on current due to a wrong reference specified for the dialogs urls. This is a regression of bug 1049591.
Created attachment 8629638 [details] [diff] [review] ErrorDialogNotDisplayed-V1.diff simple fix.
Created attachment 8629707 [details] [diff] [review] ErrorDialogNotDisplayed-V2.diff adding r= to commit message
Pushed to comm-central changeset 02cf19840bb4
Backported to releases/comm-aurora changeset a74ee7be23a7