For anyone who searches this forum looking for an answer to this I would like to let you know if have finally solved the issue. After downloaded the VMDK file from vSphere I ended up with two .VMDK files. One file was only a few hundred KB while the other was multiple GB. The multi GB sized file has...

Please explain that.....you say you don't support that format. The main description of the program is to convert from VMDK to VHD. This is a VMDK file that I am trying to convert; but you say it is not supported?

I have copied a VMDK from a VMWare ESXi datastore that I want to convert to VHD. The VMWare virtual guest was shutdown prior to the copy from the ESXi host. When I try to run the Starwind V2V converter it says Invalid File Format (10) [0] . Then on the line below that it says Desciptor is too large ...