Calculated fields on forms have quit working

[Revmike33]

I have an Access 2010 database for my church with a number of forms, and everything has been working well for two years. However, now calculated controls on all of the forms do not work. I do not get an error message, they just remain blank. I have tried deleting the controls and creating them again, to no avail. Since this is common to all of my forms, it would appear that a switch has been thrown somewhere that allows calculations to be made, but I have been unable to find it. Any ideas?

[Bob Fitz]

Can you post a copy of the db

[June7]

Don't need real data, follow instructions at bottom of my post.