Take a look at the past snapshots of the games that aren't working right that I post. You will see the issue there.
that was your "fault" by using ccd, which is at the moment not compatible with chdman.
the cd images by themselves were fine, just not good to be used in MESS
either you use imgburn (which is absolutely fine too), or you wait until Arbee improves chdman and then you will be able to convert ccd files without issues