Scheduler not working...

I use avast 4.8 pro av (trial) on my system, but the scheduler feature doesn’t work as it should for whatever reason. I don’t know why this is. I set up a new scheduled task in the ‘Scheduler Event Properties’ dialog box and try to run it at the preset time but nothing occurs. I’m wondering if it’s a software setting that can be undone or if the Scheduler feature is disabled in the trial ware version.
Furthermore, the scheduled scan should show up in XP’s Task Scheduler, right? I’ve noted that regardless of how often I set the scan to occur, it doesn’t show up in TS.

The scheduler is not disable in the trial version.
The schedule scan does not run (and won’t be shown) into XP Task Scheduler, it runs into avast itself.
I have tasks scheduled and they are running…