We've come across a crash that occasionally happens when you turn on current line highlighting in the Settings. The problem is that when the exception occurs, the Visual Studio debugger isn't allowing us to catch it to even see what the problem is. It's getting an uncatchable Win32Exception somehow. We are still trying to investigate this issue.
If you see it happen with anything other than toggling the current line highlighting option, please let us know what you did to repro it.
Actipro Software Support