Is anyone else experiencing issues with Pro/Program in 2001. I am attempting to modify a complicated part driven by a layout which was originally created in 2000i. Our company has since upgraded to Pro/E 2001. When I attempt to enter the program by selecting #Program, #edit design, Pro/E exits. This happens consistently with numerous like parts that need modifications and updating to the Pro/Program. Also, with these same parts, when I attempt to add a threaded UDF tap, Pro/E exits. I spent months creating these parts. Is there a solution to my problem?