In virtual center right click the VM and check the snapshot manager to ensure there is not a snapshot that was not removed from a previous attempt.
Thanks for this - It could well be the answer to my problem, however the Snapshop option is greyed out when I right click the VM - We have another 3.02 platform that we support and I don't have this issue, so I'm guessing I do not have sufficient permissions...at the moment, anyway. Thanks again.
This issue was resolved by removing the snapshop from the relevent storage, as I couldn't access snpshot manager. I was able to SUDO to where the snapshot was located and used the "removesnapshots" command. Thanks