"Cleanup" reports 16777216 TB disk space

Hi

this is my first post here, and I'm a low-level-user of "VMware Workstation 9.02", installed on a Dell M6700 with Win7 64 Prof.

I have five VMs,

- 1 Windows 7 X64 plus 2 clones

- 1 Windows XP Mode plus 1 clone

I used the first time the "Cleanup" command, and four VMs reported reasonable values like " 20 GB used, 4 GB reclaimable".

One "XP Clone" reports "Disk space used by thgis virtual machine: 16777216 TB; Reclaimable space: 4.1 GB"

Bug or Feature?

I restarted VMWorkstation, but got the same result. Is it a known issue? Does it indicate other problems or can I start "Clena up"?

EDIT: "Defragment" this VM was finished in 0.5 seconds, so it did nothing ....

Thanks and regards

Peter