Trouble with cloning

I'm having trouble cloning an asset listing. It has a couple sub-assets, but nothing really major. When I try to clone it the HIPO gets to about 33% and then appears to pack up and go on holidays. I've been told I shouldn't clone a clone, but in this instance I'm cloning an original asset that I've only just set up.

Tips for successful cloning: a) Perform the clone as root and b) there should be NO active locks in the system. If you can manage that, cloning should work fine.