Cubase 7 loading problems

Having a problem loading cubase 7 in the same windows session after I’ve shut it down. Also closing a project in open cubase session causes it to hang, so I can longer open another project.

When trying to open cubase again task manager shows it to be consuming 10000+KB (as if its initializing), nothing else happens.

Also noticed existing projects using 32bit vst synths (jbridged) , cubase is reporting that it could no longer load them.

As yet cannot explain why this is happening.

The blah blah stuff >>
Windows 7 Sp1 64bit
Cubase 7 64bit mode
Intel i5 2500k processor
AMD saphire 5570 HD graphics
Creative X-FI titanium
Bitdefender total security