We\'re having problems with Windows silently eating exceptions and allowing the application to continue running, when the exception is thrown inside the message pump. For ex
ANSWER IN HINDSIGHT for anyone who stumbles upon this later.
This was caused by a known issue in Windows http://support.microsoft.com/kb/976038 - make sure you're up to date, install the hotpatch if you need to, and mark your application as Windows 7 compatible. http://msdn.microsoft.com/en-us/library/dd371711%28v=vs.85%29.aspx
I've seen this with exception codes c015000f and c0150010.