I just tried to run a Reminders Report through Mail and it keeps telling me there is "No Criteria". I've doubled checked the pledges in our system to see if there was something missing/unchecked/etc. and nothing seemed wrong. I even ran this as a include all records and dates criteria and it still comes up with "No Criteria".

Did anyone come across this issue? If so, what is the resolution.

Have only come across this when something was missing or entered incorrectly.  (reminders not checked, run date mis-typed)  If you haven't solved this one yet, I would call support and get the live help they should be able to diagnose it fairly easily - there are so many factors involved running this one.

Good luck.

I think that happened to me once when the Run Date (bottem left) wasn't correct.  I used the end of our Fiscal Year since that is when all the pledges are due.

 Have you set up your scheduling for all your pledges?