System Exception Errors

[BobinBend]

With the latest version of PixInsight 1.8.6.1457, I'm experiencing a lot of program crashes that result in System Exception Errors. Here's an example of one from my Windows 8.1 Event Viewer:

Faulting application name: PixInsight.exe, version: 1.8.6.1457, time stamp: 0x5c472890
Faulting module name: Qt5Widgets.dll, version: 5.12.0.0, time stamp: 0x5c10be36
Exception code: 0xc0000005
Fault offset: 0x0000000000055470
Faulting process id: 0x1768
Faulting application start time: 0x01d4bb39a878c2c3
Faulting application path: C:\Program Files\PixInsight\bin\PixInsight.exe
Faulting module path: C:\Program Files\PixInsight\bin\Qt5Widgets.dll
Report Id: 07fc9e80-272d-11e9-8327-60029272c717
Faulting package full name:
Faulting package-relative application ID:

As can be seen from the error message Qt5Widgets.dll is at fault. In looking at this file in PixInsight\bin I noticed the version as 5.12.0.0. So I downloaded a different version from the internet and placed it in the \bin directory and PixInsight would not startup. So I replaced the original and it seems to be working as before with the occasional crashes. I could not find any Qt5Widgets.dll files anywhere else in my windows system folders (either system32 or syswow).

Several of the BatchProcessing scripts are causing the problem but I've seen it in other heavy memory intense processes as well. The problem always seems to consistently occur in the SubframeSelector process with 24 subframes.

I'm using Microsoft Surface Pro 3 with Windows 8.1, 64bit OS, Intel Core i5-4300U CPU @ 1.9 GHZ 2.5 GHz with 8GB of ram and SSD drive.

Is there a Qt5Widgets.dll file I can use that will eliminate these crashes?

Thanks for your help in advance!
Bob

[Juan Conejero]

Hi Bob,

This cannot be reproduced under normal working conditions, on any of our working and testing Windows machines. This is a machine-specific issue, probably caused by a misbehaving graphics driver, a conflicting application, a wrong or damaged system component, or a faulty hardware component.

Please note that PixInsight includes its own Qt library files; you cannot replace them with any files provided by third parties.

Finally, also note that Windows 8.1 is not one of our mainstream supported platforms. The only Windows platform we support officially for current PixInsight versions is Windows 10.

[BobinBend]

Juan,
Thanks for your feedback, although not what I wanted to hear. In looking for a workaround (short of buying another computer) can I limit the amount of ram memory that PI uses to determine if it is a conflict issue? I know this would probably degrade PI's performance but I'm just trying to isolate the conflicting process.

Thanks,
Bob