(PSX DEVish) Reading Files in ISO. Help?

[gxd]

Hey,

I'm currently writing a psx app (ROM) and using AdriPSX for testing / debugging (I never could get my AR/Comms to work). and I seem to be having a bit of problem Loading a file.

Ie. I load the iso in AdriPSX, the game (my app) runs fine, then where i have the equivalent to "fopen" in my program, it never seems to be able to find the file on the ISO.

The wierd thing is, i burnt the ISO and played it on my psx and it seemed to open files w/o a problem.

Is there a specific plugin that will make this work? or any other settings?

thanks,

gxd