Attemped to divide by zero, HELP!

When I try to select a product to start a table, in the POS, I got this error “Attemped to divide by zero”, then the software get close, please help me, How could I fix this error?

I am new using the software.

Regards

Pablo

My guess is you have a calculation or formula that is trying to divide by zero in a Rule.

Thank you vrry much John
You were right, it was a timming rule.