Deep Freeze(Game) Problem

[sidewinder]

Hi,
I was playing Deep Freeze on pSX v1.13 but there was a wall problem like shooting enemies behind walls or stucking in some areas but it wasn't really important. But at the beginning of the stage 4 when character in AI control -in the picture- it's stucking and I can't do anything. It has something to do with emulator because it wasn't happening on playstation 1. Is there anyway I can fix this or step just into next stage?

Attachments:

[Truth Unknown]

I don't know if this would help at all, but this could be a game bug of it's own (I know you said otherwise, but work with me a bit). I can't look up about the game right now so I can just make some quick guesses. Check if the second game controller set on, the game might be looking at that controller. Hmmm, well that's all I can think up without looking into the game's history.