[color:"orange"]There should have been files in the act 1 dynamic folder, at least. The folders for the other acts would be empty if you had not gotten to that point in the game yet.[/color]
There were files in the dynamic folder when I deleted it.
[color:"orange"]Have you tried running the game in compatibility mode, assuming Vista includes this feature? Try right clicking on the div.exe program file, select Properties and look for a 'compatibility mode' tab, or something.[/color]
I tried it under different 'compatibility modes', and it still has the same problems for me.
[color:"orange"]
Have you checked for Windows updates? Vista drivers are not very mature, so updates or patches may address compatibility issues.[/color]
Fully up-to-date here. Updated graphics drivers and such to.