all the way to the left in "the Net" world where the arrows points me to after finishing Cascade Compiler. that level took me forever!!!! when i go to it the door won't open. i am not sure if it is a bug. please help. i can go back to another world where i have some unfinished levels. maybe that why i can not continue. the "steel forest" world, level called saw mill i can not complete it though. thanks!