Emulator

What steps will reproduce the problem?

1. The game runs fine untill I join the first level of gameplay. My Blob must jump out of the sewers, but there are two huge black squares on top of my screen, which make it impossible to play further. They cover almost half of the screen.
   2.

What is the expected output? What do you see instead?
Make the squares transparent.

Dolphin version with the problem? Other Dolphin version without the
problem? SVN 6298, but also 6285 and 6278.

32-bit or 64-bit and any other build parameters? 64-bit

OS version and versions of tools/libraries used? Windows 7 Ultimate

Please provide any additional information below.