[Bug 37870] New: After launching Battle.net "The application encountered an unexpected error"

https://bugs.winehq.org/show_bug.cgi?id=37870

Bug ID: 37870
           Summary: After launching Battle.net "The application
                    encountered an unexpected error"
           Product: Wine
           Version: 1.7.33
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 50437
  --> https://bugs.winehq.org/attachment.cgi?id=50437
log from launching wine battle net launcher in console

I have had Diablo III and Battle Net launcher working perfectly on my laptop
with Nvidia 420M and latest (346) drivers just fine. 
Now I have upgraded from my laptop to PC while taking on the hard drive
contents (with some drivers adjustments to use AMD GPU on PC) and it works just
fine.
Although after launching Battle Net launcher now I get "The application
encountered an unexpected error". It happens few seconds after showing the
screen of Battle Net launcher.

Other games work just fine (e.g. Amnesia). I am attaching the log from
launching wine in the console.

I have tried both on Ubuntu's Gallium drivers and fglrx from Ubuntu's
repository (13.350). Ubuntu 14.04

I have tried launching via:
* wine
* setarch i386 -3 wine
* setarch i386 -3 -LBR wine