Hmm...I just downloade/installed/closed/reopened twice both DVD Shrink and Mp3tag with no problem.
Some posited the idea that the DVD Shrink problem is a DirectX problem. What version is installed on your system?
I guess that I would question your source for these downloads.
What other programs installed produce this behavior?
I've never known Windows to find the wrong path...unless the original program was copied from CD and the path indicated D:, as opposed to C: as the source.
System manufacturer and model?
Have you checked Event Viewer for possible errors that might shed some light?
How To Use Event Viewer - http://www.bleepingcomputer.com/forums/t/40108/how-to-use-event-viewer/
Ultimately, it seems that something is wrong with XP that creates the reference to the invalid path. i suppose that I would either run the sfc /scannow command or do a repair install of XP...if this was something that impacted more than 1 or two programs.
Your initial post says "every" but I don't believe that. That would render your system useless, which certainly would dictate at least a repair install...some investigation for malware...and maybe a clean install.
Edited by hamluis, 07 January 2010 - 02:13 PM.