"Only deletes recording files, not cdr log" message in Call Monitor

I get a message in red saying "Only deletes recording files, not cdr log" in the Call Monitor of the User Portal, when I try to delete the recording. I checked the box next to the CDR and clicked on delete and that's when the message above pops up on top of the page.

Going into the recordings folder /var/spool/asterisk/monitor folder, I find that the recording hasn't been deleted either.

I've just recently upgraded freepbx from 2.6 to 2.8 and Asterisk from 1.4.36 to Asterisk 1.6.12 to get the recordings in Call monitor to play. Let me know if you need any other information. I'll be happy to supply it.

Cheryl