Hi Morrie
I may have seen this before, In the folder that contains your VMDK file, check to see if there is an LCK file. Try removing this. (because I don't know your setup I suggest just moving it somewhere else before deleting it, unless you feel comfortable you'll never need it. all it is is a lock file on your VMDK file.)
My problem was an inability to start up a VM but the error message is the same.
Thanks.
