Hmmmm that is strange cause if i build my levels and dont save them they still run using untitled.wmb shrugs oh well glad ya got it working

Yes i'm glad too , and the main problem was wrong use of the version.
i just removed everything ..and i installed new trail and did upgrade immediatelly ..

And finally when i give name to the level (savbe the file) it run perfect .

That could happen if you are using a more recent WED/Map Compiler but an older engine, e.g. if you are updating your version while acknex is running it would be skipped and could lead to this error.

Thanks alot for that kindly comment, but how to create the executable file (published file) ? when i publish i never find the main kfile which it must be executable to run the level or game ..!!!

regards