OverCAD products are build with ObjectARX. So they can work with AutoCAD ObjectARX enabled version. Like AutoCAD 2002, AutoCAD 2004, AutoCAD 2005, AutoCAD 2006, AutoCAD 2007, AutoCAD 2008 AutoCAD 2009 and AutoCAD 2010. They don’t support LT version. But if you have any softeware that can enable ObjectARX on AutoCAD LT then OverCAD products can [...]