UMDGen LBA Position

Well today I started having this problem when I try to compress a file to .cso format. I have no idea whats wrong, this only started happening today. This happens everytime I try to compress a file to .cso, but i can compress one to .iso with no problem. Any ideas?

re install the UMDGen and make shure you have all fo u r specifications right, and it could be corrupted so...

Well i tried reinstalling it last night, it still is messed up.

you have a faulty iso just download another one and see if it works it happened to me a couple of times too becuz who ever shortened the iso didnt put dummy files in the places he/she deleted

Ah i see. I guess I have to get some dummy files to put in there.