I have a lisp command that has worked for years in Autocad and is not working in my DS trial. Other lisps I have tried are working, but this happens to be the most frequently used and so we need it to be functional. It returns with the error "invalid parameter." I am not a LISP author so I don't know how to troubleshoot this. Can anyone help me? It's not letting me attach the .lsp file here so if anyone knows how i can do that it would help, thanks!