Troubles With Nec 71713a

my nec 7173a burns correcty dvd -r 16x TDK but doesn’t read it?
Why? so, have many problems of lecture with other media -R.
I flashed Liggy & Dee’s Optiarc AD-7173A Modified Firmware 1-O2.
Often, when i insert a dvd, then when i eject it and mount another one, in windows explore resources the listing of the files is that of the one inserted.
i used SO windows xp prof.

please how can i resolve this problem?
thanks and sorry for my bad english

Try again, burn with verify this time.

i DID IT, but it’s as before