after running a script several times day, it does nothing, no errors

Discussion created by pyonono on Jul 15, 2013
Latest reply on Jul 16, 2013 by pyonono
After having run a script within Arcmap several times and successfully, today the running window said Completed! in 0.00 seconds....and nothing happened, no outputs!, no errors!

You may think I have changed a code line without notice, but I promise you not. it must be something between ArcMap and ...whatever.

Any ideas?