Amine and AutoCAD 2009 ribbon
There's a new issue that has been reported to us lately. In the new version of AutoCAD 2009 and up, Autodesk has added a new type of menu which is called the ribbons. It's a sort of new menu designed to replace toolbars. See image below.

But, this new functionality does not work properly with Amine at this point and might cause error messages.
Therefore it's highly suggested that you remove these ribbons when you work with Amine. To do so you have to type in this command in the command line RIBBONCLOSE
After this, you will be able to open AutoCAD without this ribbon on screen.
This issue will be addressed in the upcoming months.