Emulator

What steps will reproduce the problem?

1. when starting Super Smash Brothers Melee, i get "WriteShift - can't
   shift imms" after I press the A or Start buttons.
2. When opening most GC games (zelda, SM Sunshine)I get "WriteNormalOp - a1
   cannot be imm" when it starts or after I press the A or Start buttons.

What is the expected output? What do you see instead?

1. It get error message PANIC "WriteShift - can't shift imms"
   When I select yes or no emulator turns off.
2. I get error message "WriteNormalOp - a1 cannot be imm" when the game starts.

What version of the product are you using? On what operating system?
svn 1640 on windows xp 32bit

Please provide any additional information below.
When disabling "dynamic recompilation" in the core/config it does not give
me the errors but the speed greatly suffers to be 2-4FPS.