I was trying to add a tag for "Episode" (changing the display for the Custom 1 tag) for a series of audiobooks and got an error saying the field already existed. I went to save it, since I couldn't find the tag anywhere and it appeared nothing happened. I went to close it and nothing happened. I clicked on the X to force close and got a popup saying that the collection had been modified and asked if I wanted to save it. I said yes, and it just hung at that point. Had to go into Task Manager and force close. The error log didn't really show much.
I have a screenshot, but this forum apparently doesn't allow it unless it's on the web.
Error log item:
5/16/2019 10:40:48 AM - refresh library failed: Collection was modified; enumeration operation may not execute.
Just to note, I'm seeing a lot of this error in the log. But many of the errors are from over a month ago, and going all the way back to when I first started using MB.
Unrelated question: Can I clear out the log of the old errors that may be related to older versions?