Alone In The Dark

[Mup]

I find I can make a copy of both disks of this game with no problems at all.

The only problem I find is that once you complete disc 1 and it asks you for disc 2, it makes a check of disc 2 before you can play on. My copies fail this check every time.

Could this be because I am using a cartridge/spring combination to play my backups? I haven't seen any info on this problem from anyone else - am I missing something obvious?

Someone has released a patch to fix this very same problem on the Dreamcast version of the game, but not the PSX one.

Any info you guys could provide me with would be much appreciated!