Conker's Bad Fur Day Black Box in upper Left Corner!

I’m using mupen64plus and trying to play Conker’s Bad Fur Day. But when I get into the game there is a small black box in the upper left hand corner of the screen. I went into the settings and turned things on and off but couldn’t get it to go away. Does anyone know how to remove this?

Screenshot of what I’m talking about:

Bump…Any suggestions?

Reset core options fixed it!