Error: "Unable to open file "E:\NSP2010\NSP2010drive2.vmdk": One of the disks in this virtual machine is already in use by a virtual machine or by a snapshot."

Hello community.

I've been using my guest for a while; each time I needed to restart the host, I would shut down the guest (in this case Win2008R2).

The last time I suspended the guest instead of shutting it down. Now when I try to start it up I get this error.

I've seen people having this error on the forums, but the suggested solutions don't fix my problem.

I am not sure what I need to attach to help diagnose this problem, but will be happy to do so if someone requests it.

VMWare Workstation 8.0.2

Host: Win 7 64

Guest: Win 2008 R2

Many thanks.