[robweber]

Nope. I am using my Mac for sickbeard, couchpotato and headphones too with system screensaver and sleep permanently disabled. Since XBMC is running on foreground all the time serving all my video needs, I have enabled the screensaver inside XBMC it self through settings --> appearances --> screensaver. It will kick in after 5 minutes of idle in XBMC.
I have tried to lower down to the auto updates settings to 1 hour, but with the screensaver on, it would not run. I still have to run it the updates manually once I am out the XBMC screensaver.

Hate to resort to this line of response but...."it's always worked for me" (and the couple thousand other downloads this addon has gotten).

About the only thing I can suggest here is to post a link to a debug log on your system. Include everything from a cold startup, letting it sit through at least 2 "update periods" (no media running during update time) and then shutdown XBMC.

If you know anything about Python code you can also trick the system into running more often. Take out one of the * 60 statements here:

Code:

if(now > self.last_run + (timer_amounts[self.Addon.getSetting('timer_amount')] * 60 * 60)):

and it will run every X minutes instead of every X hours. I do this when testing to save time and make sure things are working. If you can get this info post to a pastebin site and put the link here. I'll try to take a look at it.