We have a 5-yr old Access 2003 application with about 400 controls. Late last year we could not create new controls, reviewed the postings on tek-tips reading about the 754 maximum and MSAccess's non-clean-up of old controls that have been deleted. We created a new form, copied and pasted the old contols onto the form, then copied and pasted the code associated with the controls. We can now successfully create new controls. After creating 3 new controls, we are having problems again. When the code is executed behind the new control, in this case to set a form variable to a new value, the application blows up with the "encountered an error" message, "do you want to send report to Microsoft?". Any help here would be greatly appreciated.