Had this stupid problem today, when I was trying to get VMware to work with a thumbdrive.
Recently hooked up a Sony Ericsson smartphone to my PC, so I figured out that might’ve been the cause. Anyways here’s the cryptic error message Vmware throws out @ you.
To fix that I simply rolled back my USB root hub drivers from the SE ones back to the original Microsoft stuff and hey presto, VMware started working normally again.
Don’t know if the SE phone will now let me update it’s firmware with the M$ drivers, but that remains to be tested another day. I really hope the VMware people will fix this. *shrugs*