I'm unsure if it's the same crash on exit bug but I can reliably cause a crash in win vista 32:
1. Open Construct2
2. Create new project
3. Add Sprite
4. Close image editor
5. Close Construct2
6. "Construct 2 game creator has stopped working"
I've since narrowed it down to find that whenever the image editor is opened Constuct 2 will crash when it exits.
The error report is always the same, the only thing that stands out is the "fault module name" is "gdiplus.dll". In r52 Ashley made the image editor software rendered and I presume that he may have used gdiplus to do the drawing. So my thought is something isn't being uninitialized properly.
EDIT:
I just further narrowed it down to find it will only crash on exit if the color palette is opened which would effect r99 on.