Having trouble swaping ISO files with PSX

Every time i try to do it, it'll just stay on the screen prompting me to change disks, i've waited for about an hour(let it on and came back to see if it loaded) yet nothing. there has only been one multi disk game i've tried this with (the only one i currently have both disks to)and thats Parasite Eve

The Change Disk function is broken in version 1.7.0, you need to use 1.6.0 or 1.5.2.

Ok, thank you

To be precise, only with ISO. With a regular CD/Virtual Drive, it should work fine.