SafeCast 2.20 problem

[SystemeD]

Hi all,
I've a problem using Olly for debugging a game with Safecast 2.20 protection. It has a starting form where you can decide to try, buy or insert a serial, I can easily bypass all the antidebug tricks (it's very easy because they are all in one call at the beginning) and I can reach that form while debugging.
If I want to try the game instead, it doesn't start but the process runs correctly (it doesn't exit but nothing happens).
Then I tried to create a small loader to launch the game and the result is the same, I can reach the starting form
but the game doesn't start. Any suggestion?
I'm sure that the antidebug tricks aren't called again but it seems that somehow the game know that another program started it.
Thanks,
SystemeD