[EddieJones]

Next time it does this could you grab the logs straight away and message me with them.
Mac Workstation WSControl Logs Location:

Logs: /Users/”user name”/Library/Logs/Avid/S6

The User Library Folder is hidden, don’t get confused with the System Library folder rather than the User Library. The easiest way to get it to show is the following:
Click the Go Tab at the top of the Finder screen. When the menu drops down, hold down Option to reveal the hidden User Library Folder, select Library. Once selected you should be able to navigate to the Log files…