I used to use adaptec/directcd and found it a right royal b....d to re-install. You only have to miss one registry entry on the unistall and it will tell you you already have a copy and won't re-install. Along with other problems such as you are having, I eventually went to Nero and haven't had a problem since.
But that doesn't solve your problem. I did come across a site that gave information on how to retrieve data off CD's that had died. I could try and hunt it down again and post them if that would help?.
cheers