Can't copy a CDG

[uawrich2]

When I go to Import Tracks and copy all the CDG files onto the hard drive, as soon as I try to import the files to the Custom Assembly I get a message,
"The imported track type (wav/cdg) does not match the open project type. Click the Custom Assembly Tab and click the Audio CD Button"
I know if I do that, I won't get any graphics so I don't know what to do. When I first got the software, I made backups of all the CDG's without any problems. I am trying to make a backup of a disk that I already have copied before. I downloaded the latest version MicroStudio ver. 2.611, but the problem is still there. I am using the MTU Plextor DVDR PX-712A 1.05.
I tried using Duplicate Disk and it copied the music, but no graphics. If I put the original CDG in, it plays music and graphics just fine.