"Encountered an Improper Argument" To Parent Forum August 21, 2015 at 11:14 am #44600 DenneenParticipant Today’s problem is I was trying to create a surface, and I got a “Encountered and Improper Argument” pop-up. I can’t get it to close, I can’t Save, or even Close 20-20. Anyone know what to do? Thank You Denneen August 21, 2015 at 11:35 am #44617 DenneenParticipant Solved…. I was able to open a different file from my dock. With the other file open I could go to close the program, and save my file. You must be logged in to reply to this topic. Share this Post