I'm running a set where there are about 5 child databases.
Something happened recently, and when ever I'm trying to change or enter a record, I'm getting the following error message :
"Evaluation error : no expression".
A new record can not be saved, old one can not be changed.

I can not figure which expression or field rule or anything else that is causing it.

Anyway I can see which field rule or field is causing the error ?

Thank you in advance,