First of all sorry for my english. I need help.
On the level 7 of episode 1, after hero cries "show yourself!!" the wall explodes and... nothing happens... Boss with the buddies doesn't show himself, so i stuck in the game. Restart the level don't help. I even restart from the level 6 - the same problem.
Is there any way to fix it?

I'm running gog version of game. Thank you for help, mario cheat help. After i use "mario 1 7", boss finally appear. And thank you one more time for wrote the new version of mario cheat in another topic, so i can use it.