the Changelog for version 2.39h includes:
CHG: supported operating systems: Windows XP, Windows 2003, Windows Vista, Windows 2008
Does this mean that mp3tag is just not going to be tested unter Win2k anymore or did you add any functions that do not run under that OS, Florian?
My Windows 2000 installation is doing fine and I have no plans to update to later Windows versions. If I ever have to change, the next OS will propably be Mac OS X or Ubuntu.