Can't delete PM messages

[CosmykTheDolfyn]

I think I found the issue in bad communication.

You can delete INDIVIDUAL PMs by clicking on a PM to read it and then hit delete at the bottom of that thread.

However, you CAN NOT check mark PMs in your inbox and then hit delete without getting an error message.
So, it may have worked for Petie because he has been deleting individual PMs and not the check box/delete method.