I'm trying to make the switch for the CAD department to AutoCAD MEP 2009.

My problem is, our engineers are using AutoCAD LT 2009 and I can't seem to get the object enablers to install.

I downloaded this, but it gives me an error stating the proper software is not found.
http://usa.autodesk.com/adsk/servlet...linkID=9240938

Any ideas?