I really want to punch you in your face now.. xDOk dude you are probably going to hat me but i made the stupidest mistake ever:
the reason it didn't work for me was that i was stupid and used a different Gecko (i used TCPGecko with CC's Codehandler over the Homrbrew launcher)
now that i used the Kernel Exploit 31 and PyGecko the HW trainer work perfectly and i also can use the Wind Waker HD one wich didn't work for me before either. (i dont own TP HD so i couldn't test that)
maybe some other people have done the same mistake.