Have you tried monitoring the serial output when you boot your Empeg?
Hijack logs any problems with the IR Translation table to the serial port when it parses config.ini.

Try this, you may find you've typed something wrong.

I must admit I have not tried much stalk code translations - even so it should work, but as Mark is only human, he may have made a mistake somewhere that broke it.

But anyway, try monitoring the serial output on boot up to see if Hijack reports anything useful/obvious.