How to localize cause of GPF at RunUserInterface (unknown position)

Hallo,
I'm facing the random GPF pointed to the RunUserInterface thread at unknown position; unfortunately the condition of the crash is really random (sometime suddenly after the initialization the application, sometimes after quite log run, sometimes after mouse cursor pointing to tooltip, ...).
The developed application (under CVI 2012 SP1 as 32-bit app for Win) is quite complex user interface to distributed control system using external dll library as the data layer. This library is running it's own threads and I'm using the multithreading library TSQ concept to get data from data layer.
Have anyone some hints to reveal the cause?
I've digged this, this, and this - but not have no success to follow the hints. After the crash (release mode) there isn't obvious "crash dump" Windows dialog. Iinstead of this a dialog box to start the (CVI) debugger appears - but it leads again in the blind way. After start of the CVI, there is message no debugging information (?), "unknown position at thread id XYZ ..." (note the XYZ corresponds the main thread id again).
Thanks for any help!
George

Hello,
thanks Roberto for your concern!
Unfortunately there isn'n any explicit and direct relation to the gui operation (there involve duplicating of tab panels with tooltip enabled, creating the panels from hidden template - again with the tooltips etc.)
But! If I'm not on wrong path, there are circumstances indicating a problem in toolbox library - see the attached picture (I'v gained a little progress in collaboration with WinDbg and Dr. Watson ... ). On the left is WinDbg interpretation of crash dump, on the right is the map file content.
Thread list sems to be correct, I'v found ThreadsId of some used threads, the 000:1244 belongs to mainTheadId.
The call stack probably shows activity of tool tip function:
cvirte!clock + 0x9F3
cvirte!clock + 0x60A
cvirte!SetIdleEventRate + 0x7A3
cvirte!SetIdleEventRate + 0x23F
Siimon + 0x27204
Siimon + 0x1A780
I'm a little confused discrepancy with the table of symbols (map file) - the offsets of function doesn't perfect match. Could someone knowledgeable shed light on this, please?
Or is it just a coincidence and I have nothing to do with tooltip and I'm facing problems with overwriting memory or something similar?
Thank for any expert voice!
George
Attachments:
RunUserInterface_DrWatson_dump.png ‏80 KB

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How to localize cause of GPF at RunUserInterface (unknown position)

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