I;m also having this problem, the strange thing is, I had it working before, but now it crashes on battle.
I'm using ePSXe 1.6.0
Graphic: Pete's OpenGL2 Driver 2.8
Sound: P.E.Os DSound Audio Driver 1.9
CD-Rom: ePSXe CDR WNT/W2K core 1.5.2
The error I get is 'SPEC Opcode 01 UNIK (PC 001f307c) (001f3074) (8126.25)'
I'm using ePSXe 1.6.0
Graphic: Pete's OpenGL2 Driver 2.8
Sound: P.E.Os DSound Audio Driver 1.9
CD-Rom: ePSXe CDR WNT/W2K core 1.5.2
The error I get is 'SPEC Opcode 01 UNIK (PC 001f307c) (001f3074) (8126.25)'