Client was making drawings with a layout of the assembly opened. Was making part drawings and went to the assembly to see how he wanted the part in the drawing. No graphics no (X) to close the assembly. So he called and I went out. I had to use the drop down close and this is what was received when I clicked on a drawing tab.
Fix task manager and killed Inventor..
Found this but I do not see how I can change to English when I am in English.
He was also saving client was just changing from IDW to IAM and no graphics not same...
http://forums.autodesk.com/t5/Autodesk-Robot-Structural/quot-encountered-an-improper-argument-quot/m...
Will keep you informed if anything more happens..