Emulator

Game Name?
All, but I am specifically using smash bros brawl and mariokart double dash

Game ID?

What's the problem? Describe what went wrong in few words.
I built the debugfast dolphin and when I try to play them game, it gives me a warning dialog and then crashes. This is what it says:
Warning
IntCPU: Unknown instruction 00000000 at PC = 80487340 last_PC = 8132ffc8 LR = 80487340

What did you expect to happen instead?
I expected it to let me play the game.

What steps will reproduce the problem?

1. download latest git development version of dolphin
2. use this cmake command: cmake -DFASTLOG=ON ..
3. build dolphin
4. open dolphin in debugmode
5. try to play a game

Dolphin 3.5 and 3.5-367 are old versions of Dolphin that have
known issues and bugs, so don't report issues about them and test the
latest Dolphin version first.
Which versions of Dolphin did you test on?

This just recently started happening. I first noticed the problem about a month ago. This sort of thing has happened before, but its normally fixed within a day or 2 on github.

Does using an older version of Dolphin solve your issue? If yes, which
versions of Dolphin used to work?
yes. anything from over 1-ish month ago.

What are your PC specifications? (including, but not limited to: Operating
System, CPU and GPU)
15" Macbook Pro running Mac OSX Mavericks 10.9.5.
Processor: 2.3 GHz Intel Core i7
Memory: 8gb 1600 MHz DDR3
Graphics: NVIDIA GeForce GT 650M 512 MB

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)

1. works fine in normal mode (rather than debugmode)
2. appears to work fine in interpreter cpu emulator, but i havnt been patient enough to wait through the loading screen for the menu.
3. JitL cpu emulator gives 2 pop up boxes after wii mote safety thing the wii does. This is what they say:

Warning
Retrieving unknown spill slot?!

then a second that says:

Warning
WriteRest: op out of range (0x2bfc4938 uses 0x805b87a08)

then it quits

Thanks in advance!