Clone problem

[Solid Shadow]

I'm a n00b here... I looked through past threads and didn't come across anything regarding my particular problem, so here it goes...

I make backups of every PSX game I obtain. Some time ago I accquired Tales of Destiny 2, made a backup copy with CloneCD 3.4., and archived the CCD files. Recently I burned the CCD files to a disc and though it booted up just fine in Virtual Game Station, it will not boot on my PSX or my PS2. I've tried burning the image with both CloneCD 3 and 4, but no matter how I burn it, it still won't boot on my console(s). Has anybody else run into such a problem? Any suggestions/ideas? It's not like I can't play the game, as I've got the original, but I'm still very curious as to why this is happening.