Just found this out myself... Ikari Warriors and Victory Road recordings don't currently work with MAME 0.35 Beta 2. I'm not sure if it's the joystick bug or not, since the mouse can't be used for spinning... but when playing back, any button pushes of Z and X to rotate the direction do not register. During playback you can actually affect the recording by pushing the buttons. Let it go on its own and the recording is doomed to fail.(posted 9810 days ago)Let's hope this is fixed in the next beta.
-BBH