Extracting an open session

vbimport

#1

Ok, so I have been asked to get data off of a cd.
Iso buster can see an open session and two tracks (track one 720kb and track two is 623.88 mb) but I get unreadable sector errors when I go to extract the data.
I checked if “all files are physically readable” and there were no errors.
What am I doing wrong?
Any help is appreciated.