Problem creating a new VM through the vSphere API

Hello,

I'm using the following (quick draft )python code to try to create a VM:

[Python] import atexit from pyVim import connect from pyVmomi import vim import - Pastebin.com

But it does not work. The server response after uploading the disk is:

'Not a supported disk format (invalid sparse VMDK header)'

Which is really strange, because I'm uploading a vmdk file that was generated by the server itself (when I created a new VM through the vSphere client), so it should really be valid. (I added the vmdk file as an attachment)

Any help on this would be much appreciated.