When you say the HIPO doesn't complete, what is exactly happening?
Is the progress bar stuck or the window is gone blank?
The stuck HIPO, can't it be resumed from HIPO Herder using Chrome?
Do you have Squiz Server enabled? This can be checked on "Squiz Server Configuration" screen under System Configuration on admin interface.
In the error.log do you see any error registered when the HIPO is not loaded on Chrome? Also what version of Matrix are you using?
If its a new installation, then what is the Memory limit set to? (can be checked on System Configuration screen under PHP Configuration > Web Memory Limit)
Yes, we have Squiz Server enabled on the system. It's outputting a notice to the error.log when I restart the HIPO job (which I've found I can do in Chrome as well as Firefox):
"The Squiz Server reset the running mode to WEB for User ... and Job hipo_job_clone_assets-..."
There's nothing in the log for when the HIPO just seems to stall. Matrix version is as my last Q/A - 4.10.4. It's an existing installation, and the memory limit's sitting at half a gig from memory.
Curiously, having just used the HIPO herder to herd the latest occurrence of this, I'm now able to move and clone assets without the problem... Might the Squiz Server notice about resetting the running mode indicate a problem with our Squiz Server setup?