Hi,
the double click on the MailBox or the Properties button, works only if you have the access right to that Mailbox.
To review access rights for all the Mailboxes in the system, you can do it from the Setting: Mailbox Browse
I would like to know what BackgroundHALShouldPause does, and how to use it. While it's listed in the HAL Primitives report, it is not used in source code and it doesn't appear in the LMS HAL...