Howdy, 

After the most recent update, the forum I'm an admin of hasn't been allowing some users to attach files to forum messages. Did something change with the group setting priorities? Any troubleshooting help or advice would be great. 

Depending on which version you updated from, there have not been any recent changes in the latest release we can instruct to. However, if you would like to provide an example, we can review the issue you're having.