打开CAD安装目录下acad.exe.config文件，添加下列代码
<configuration> <startup> <!--We always use the latest version of the framework installed on the computer. If you are having problems then explicitly specify .NET 1.1 by uncommenting the following line. <supportedRuntime version="v1.1.4322"/> --> <supportedRuntime version="v2.0.50727"/> </startup> </configuration>
Visual studio2010开发AutoCAD2008、2006 启动调试问题
原文：http://www.cnblogs.com/nuoyi/p/4909852.html