DVD+R Discs Burn Successfully, But Won't Scan In WhereIsIt Database

ok, when this problem first started, I was using Memorex DVD+R Discs and when I burned the content on to the discs with Nero 9, they burned successfully. The problem is when I tried to scan them into my WhereIsIt database, the process freezes at some certain point. To test the issue, I tried to copy the folder where the scan got stuck and sure enough, it could not be done. So, after reading in the forum about the bad quality of Memorex discs, I bought a few spools of Verbatim discs. They started out like gangbusters, but out of 25 disc, I have had 2 that burned successfully, but would not scan into my database. This is becoming very frustrating and I would appreciate any help on this issue…

thank you