What version of AutoCAD? Sounds like it cannot find the text editor.Originally Posted by fabriciofontolan
If r2000/2000i or 2002 go to TOOLS - OPTIONS and then look under the FILES tab. Then click on the "+" next to Text Editor, Dictionary, and Font File Name. There will be a "+" next to Text Editor Application. It should say Internal next to the arrow. You can also point to your notepad application.