Damn.. Found the problem.. Just tried it with a clean version (only unzipped it) and started it, and then the first screen also appeared correctly (before I only had one 'golden' piece in the right lower corner)..
when I set the graphix driver to directx9 it all starts to go wrong.. damn that's very annoying and a big bug..
[wrong]but being able to use an item (and loose it) which is needed to get another item that's a gameplay bug...[/wrong]
Leon thanx for helping (I propably wouldn't have needed the mirrorhint if it weren't for this big bug)..
[update]
yeah I found that out too, I couldn't remember what I did to give the item to the contestant so I reloaded where I was before, and then tried it with the rope and it worked.. Just when I tried it, I wanted to update my post, but you already found the solution too.. hehe.. So no deadend there luckily..