Hi Pat
Could you please brief us about the bug and the fix that you think corrected the ageing issue?
Seems like you have text variables and cx exit code for the week variable. Is there a condition there based on last week? Can you post or explain the code in here
My guess is that the condition is not satisfied when you enter last week and it throw error, but to make sure lets start from the above said information.
Regards
Karthik