Pokemon Black black screen

[Cryptiix]

Hello, I'm playing Pokemon Black for a few days now. But now I have a probleme! Whenever I walk trough a door (I have to go trought this door) I'm getting a black screen! The music is still playing. What can I do now? Please help

Drastic version: r2.3.0a
Game: Pokemon Black Edition (Germany)
Savestat: https://mega.nz/#!x1txXJwK!BfglWTOHtp_b ... p9opp83V4Y