Hi,

I hope someone can help me with a problem I've been having with guiminer on a 890fxa-gd70.

I can run 3 6870s no problem.  But when I install a 4th 6870, guiminer crashes when I start it with this error:

Problem signature:
  Problem Event Name:   APPCRASH
  Application Name:   guiminer.exe
  Application Version:   0.0.0.0
  Application Timestamp:   4918019c
  Fault Module Name:   StackHash_0a9e
  Fault Module Version:   0.0.0.0
  Fault Module Timestamp:   00000000
  Exception Code:   c0000005
  Exception Offset:   72747369
  OS Version:   6.1.7600.2.0.0.256.1
  Locale ID:   1033
  Additional Information 1:   0a9e
  Additional Information 2:   0a9e372d3b4ad19135b953a78882e789
  Additional Information 3:   0a9e
  Additional Information 4:   0a9e372d3b4ad19135b953a78882e789


If I shut down, then pull the card out, and boot again, guiminer runs with no problem.

I've tried deleting the saved guiminer settings, and running a clean install.

I'm running 11.5 ati drivers with 2.4 sdk.  I ran the ati driver install with all the cards plugged into monitors.  All four card show up in windows including gpu-z.  GPU-z shows that OpenCL is available on all 4 cards.

Any help is greatly appreciated.  Thanks!