I had not played with the Scheduler feature and after reading this post decided to take a look.
I DID NOT test this more than ONCE so this may have nothing to do with your issue. In fact it may not even be an issue. I'm posted just in case it may help.
I originally went into the Control Panel, clicked on Help, Sample Applications and loaded the CRM sample app. When I looked at the CRM sample in the browser I couldn't get the TEAM task to show.
I then went into the Configuration Tool and DELETED the CRM app. Exited and went back into the Configuration Tool, Right clicked on Business Space, selected NEW and Create from SAMPLE and selected CRM. When I loaded the CRM app in the browser this time Team Task was working fine.
Again, I didn't spend more then 10 minutes. But it did working. Good luck.