Please everything was going when i took this awful message :
An internal error has occured .Plesa note down the following information.
Error:prepare_script :error -18 (no such fuction in script)trying to run '' (Room1))
I can't do my work what does this mean??? :-[
It looks like you've accidentally typed something into an event field (that's supposed to contain the name of an existing function), maybe even just a space.
Check all the room's events and the room objects' events by clicking the lightning bolt icon and make sure the fields don't contain any garbage.
Aw! Thats just wonderful, I did as he said and its all fine! Thanks to you and your friend!