What is the problem with Sonic adventure 2 battle SA2B for Gamecube on Dolphin Emulator

The Problem is When i Make the Grahpics plugin (Dolphin OpenGL) and I start SA2B The game starts and fast but when it asks about memory or creating memory the screen looks like this: http://img5.imageshack.us/img5/230/62973677.jpg and the companies dont appear when it says liscenced by nintendo, Sega, Sonic team. The screen stays black please help!