Error adding application to Application table

SOLVED

Hello!

We just upgraded a customer from Sage 300 2017 to Sage 2018 with the brand new PU1 and PU2. We have already activate the AR Customer number and AP vendor number change without any problem, But during the Activation Process, when we try to activate Account code change in GL Module, we get that error: 'Error adding application to Application table'. We are log in as Administrator. Everything else seems to work normally.

 Thanks for your help and ideas.