Trial version MC7.3 launch freezes - initializing audio plugins

Hi there,

I've just downloaded MC7.3 trial version.

The first launch worked, but since then the launches have been freezing - always on "initializing audio plugins".

I uninstalled all avid products manually (PT10 and MC7) - (I tried to use the uninstaller for Pro Tools 10, but this wouldn't work, hence the manual uninstallation).

I then reinstalled just MC7, but I get the same problem. 

I'd love to get cracking before the trial runs out (25 days to go)

Any thoughts?

Many thanks in advance,

Tom