When I input a flange into my model, I can access the flange information where one inputs the pressure class, gasket diameter, etc. However, when I physically click on the flange in the model I automatically get some fatal error and CAESAR shuts down. This happens without fail every time.

What exact Version and Build of CAESAR II are you using?

Ver: 5.30.01, (Build 110228)

The latest, right?

Yes that is the latest. You're correct, clicking on the flange symbol causes the input to crash. We'll get this fixed ASAP.

Try this: go into the Configuration, Graphics Settings. Change the video driver from OPENGL to Windows Basic.

Do you still crash when clicking on a flange icon?

Thanks Richard, this fixed the problem for me.