If you were using the program with the "Windows 98 compatibility" option, you can upgrade to new version and disable this option.
There is no new feature, only this bug correction (and a small other one

I also changed the license: the program is now opensource ! (GPL)
That does NOT mean that I stop working on it. Actually I wanted to make version 4 opensource, but there is no real reason to not do that for the current version too. The only problem was that it was not easy to recompile due to some missing/changed files. But I had to work on that to correct the "Pentium 4 bug", so here is it.
ftp://ftp2.antp.be/antp/software/amc_install.exe
See http://www.antp.be/software/moviecatalog for more info