failed to lock the file cannot open the disk

Hi,

I have a problem. I just converted my physical machine (lenovo Laptop, windows 8.1), with the vmware vcenter converter standalone. Everything worked fine, no problems, no errors.

But when I want to open the file in vmware on my Ubtunu machine (a.t.m. dual-boot with win8 on the same laptop), after a while it returns the error:

Failed to lock the file

Cannot open the disk '/media/remy/WD My Book/Laptop-Remy/Laptop-Remy.vmdk' or one of the snapshot disks it depends on.

Module DiskEarly power on failed.

Failed to start the virtual machine.

I don't know if has to do with Ubutntu (version 13.04), or with vmware workstation (10.0)

I hope some can help.

thanks in advantage,

remy adriaanse