Hi…
There are several posts here regarding issues with installing 8 – then going back to 7… I had a problem too – when I tried the very same thing… See the ‘lag’ post below… I think I may have fixed it when I went through and deleted all the 3DC registry keys and then re-installed… I spent 3 days trying to get it working again…
Also – in your ‘Documents’ folder – I believe there should be a log file created every time you start 3DC… Again – as mentioned before – I’m no expert… If you post the log someone sharper than me might able to figure it out…
Regards,
Scott