Damn - tried to reinstall it and now the whole virtual machines seems broken and I can only see a black screen. It's been like this for 30 mins and I can't restart it!!
Seems pretty poor that you upgrade to v6 and need to manually update the vmtools and it crashes. Not helped by hopeless online help.
If I 'cancel the vmware tools installation' it still doesn't work.
A very frustrating experience so far.
At this rate I'm considering throwing the Mac away and going back to a Dell!