! Fix Mantis issue 4912: if a scheduled task throws an error, note it and pass it back in the event of running tasks manually from the ACP.

Signed-off-by: Peter Spicer <sleeping@myperch.org>
Merge pull request #707 from Arantor/release-2.1

! Fix Mantis issue 4912: if a scheduled task throws an error, note it an...