Program runs on Windows 7, crashes on Windows XP

[squidge]

The memory map will be different on XP and 7, but that should be invisible to the application, unless it does undefined things like trash memory or double free some pointers. On 7, you might be causing the same fault but because different code lives there, the same fault doesn't happen.

[JovianGhost]

Ok, I found the problem.
After spending DAYS troubleshooting this, and having the program crash in multiple locations, I finally traced it down to the root cause.

At some points in the program, I would create a new pointer by static_cast'ing an existing pointer. The problem is I would then deallocate that new pointer, not realizing when I did so, I was also deallocating the ORIGINAL pointer. For some reason I thought that when I used static_cast I created a copy of the existing pointer.

I went through my code and removed all relevant delete statements, and now all is well.