I just upgraded my PC and have several problems with CuCusoft following the upgrade, although previously had it working consistently well on my daughter's Sony Vaio laptop. I had two error messages when I fired up my new PC (Vista Premium, ATI Graphics card, 3Ghz Intel Processor & 4gb RAM), firstly 'Rebuild Graph failed', and just recently 'Exception in EncodeDlg'. The first went away, I suspect after some driver upgrades had automatically been installed. Then Cucusoft worked fine for a week or so, and then I got the ' .. EncodeDlg' error. I fixed this by installing the 'WECP Codec Package' from the Cucusoft website (free download). BTW I tried several converters prior to Cucusoft, and I reckon it is best for Zune video conversion. Fingers crossed it works reliably from now on ..