Hi, I get exactly the same errors with 7.7.5.1. When trying to run Nero(Express) on VistaHP, a file called "Advrcntr2" seems to cause trouble. I tried to fix this by copying the file "Advrcntr2.dll" (try Google) into \Windows\System and \Windows\System32 (due to Vista). But this didn't work for me. When I run Nero in compatibility-mode, the fatal error comes up. Now I'll try using an older version ...