Thanks for the suggestion! I'll try that and report back. Actually I think I was using the virtual MO data folder. I'll double check that, I'm not in front of the PC right now. Yes, system is overclocked but temps are being monitored constantly so I don't think is that. EDIT: confirmed, I was using MO virtual folder. I run it again and the script finished without issues. Thanks sheson & zilav for the help!