We've had several posts in our tech-support forum about trouble moving files using Opus, from people who all turned out to be using MalwareBytes.
If you're in the same boat, it looks like you just need to update to MalwareBytes version 3.4.5 or above, which includes a fix for "problem when cutting / pasting files with anti-ransomware enabled".
Based on feedback in our forum, the MalwareBytes update fixes the problem.
17 April 2018
Heads-up for MalwareBytes users seeing problems moving files
Posted by Leo at Tuesday, April 17, 2018
Labels: on-topic