Does someone has a clue, when I load a file in the vlisp editor this is what I get in the console window:
; error: bad argument type: numberp: nil
in vlisp editor, menu debug and break on error,
then load your code,
go to menu debug and last break source, to see what is causing the error.
Incidental to the problem, this means something is executing by loading the file. If this is not intended behavior, then you likely have mismatched parenthesis in the code. If it is intended behavior, I recommend you disable the execute-on-load behavior during development - it will make debugging easier.
Thank you, indeed it was mismatch parenthesis. I was puzzled because when I mismatch parenthesis I got another error message than numberp nil. thank you again.