preventive maintenance task

preventive maintenance task

Hi,

For some reason I'm not able to create a preventive maintenance task, 
Everything seems to go okay, untill I click save.

FAILURE :Error occurred while trying to save Preventive Maintenance Task.

I have read a few other articles, but this were all related to old systems, where I'm running on the latest version and service pack (build 9114)

Anyone got an idea?

Thanks,
Johan