Hello Everyone! I searched this forum and found that to have vba code to be ran whenever AutoCAD is launched, to place it in the acad2000doc.lsp file. So I placed the following code in this file: (defun S::STARTUP() (command "._vbastmt" "startup") ) Whenever I open up some files it works ok and other files it gives me a FATAL ERROR: Unhandled Access Violation Reading 0x0052 Exception at 12818950h error. Am I doing this incorrectly? Does anyone have any other ideas? I also am getting this error when I double-click on a file: Cannot find the file "filename" (or one of its components). Make sure the path and filename are correct and that all required libraries are available. Any ideas on this error as well? Thanks in advance.