Program crash when opening or closing

I have an error in Clarion 11.1 version 11.1.13815, that did not occur in Clarion 10.

Sometimes, when I open or close my program, it is totally silent with no response, it crashes without showing any message, just finishing through the Windows Task Manager to close.

I think TaskKill can do that, ie make an app just disappear.

Have you thought about sending debugview messages from your app, and see if any patterns appear?
Maybe subclass every procedure and process every msg each window receives to debugview?

You’ll have alot of entries in debugview to go through, but I can send about 30k msgs to debugview per second, on my machine, but this number will vary on other machines.