1. Press the Delete button  OR
   2. Right-click and select "Delete Selected Messages"  OR
   3. From the Edit menu, select "Delete Selected Messages".

   Timestamp: 10/04/2016 23:00:30
   Error: An error occurred executing the cmd_delete command: TypeError: CBD is undefined
   Source File: chrome://global/content/globalOverlay.js
   Line: 99

I have a problem. I cannot delete any emails. And it's not the "corrupted Trash folder" problem. More specifically: When I highlight one or many messages in ANY folder (including the Deleted folder) in ANY of my five email accounts (including both POP3 and IMAP) and I then do any of the following actions: 1. Press the Delete button OR 2. Right-click and select "Delete Selected Messages" OR 3. From the Edit menu, select "Delete Selected Messages". then NOTHING happens. The messages don't move, there's no warning popup, no beep etc I can move message manually to the Deleted folder. But then I can't delete them from there. I can delete the whole Deleted folder by deleting the "Trash" and "Trash.msf" files, but that is a drastic and unsatisfactory solution (suggested in https://support.mozilla.org/en-US/kb/cannot-delete-messages.) Any after doing this, the problem is unchanged. In Tools menu > Error Console, errors are logged each time I attempt a delete action (any of 1, 2 or 3 above): ERROR MESSAGE: Timestamp: 10/04/2016 23:00:30 Error: An error occurred executing the cmd_delete command: TypeError: CBD is undefined Source File: chrome://global/content/globalOverlay.js Line: 99 I have used TB for years with few problems, until now. I use TB on both Windows 10 and Vista (with the same data) and the problem is the same on both. I periodically copy/restore the contents of my profile folder between the PC's as a backup. I think(?) this may have started from around the time I updated to v38.6.0, a month ago. Today I updated from v38.6.0 to v38.7.2 but the problem is still there. Or it may have started after I started copying my entire profile between PC's. This is an incredibly frustrating problem. Any help would be gratefully appreciated. Thank you!