I have amended a schedule, removing Tuesday, Thursday, Saturday and Sunday as run days, on applying the change I get the message,
Data type mismatch in criteria expression. (INSERT INTO ScheduleOptions (OptionID,MonthsIn,nCount,ScheduleID,ScheduleType) VALUES (3777145876,'1|3|5|',1,46445,'Weekly'))

We have just (today) applied Build 20080212/110

I had this problem last week, and they fixed it in yesterday's release.