I'm gonna guess that you are using a very recent version of dgindex? If you open your .d2v file in notepad and look at the first line what is the version number (DGIndexProjectFilexx, the xx)? If it is 10, then I haven't gotten around to releasing a version with support for that yet, and tfm will throw an error when it finds that it isn't a supported d2v version. Actually, I added support for v10 a while ago (only needed to change 1 line), but also added a few new features to tivtc and haven't been able to force my self to update the docs so it can be released.
On a side note, when you say crashed... does that mean vdubmod disappears without an error msg? If you're on xp sp2 and using a 2.5.6 beta, try replacing the avisynth.dll in your system directory with the one from
this zip (save a copy of your current one if you want to revert back), it should correctly report the error. If it is indeed a problem with supporting the d2v version.