Hello, I don't know what is causing what. I backup and watch the movie I buy using CLoneDVD 2.1.12 (the lastest version). The media I have been using are Sony DVD RWs 4x speed discs. They rarely give me trouble until now.

My computer DVD burner is a LG-4167(lastest firmware). My DVD player/recorder is a Liteon DD-100(lastest firmware) I bought from BestBuy.

Aff of a sudden any disc I burn, whether its from Roxio or CloneDVD, my Liteon unit says "Invalid Disc". So, I use a brand new Sony disc, burn a movie, it works fine. Then I use the exact same disc again, erase, burn a movie, I get the "invalid disc" message.

To make sure, upstairs I have a Philips 642 DVD player (latest firmware) and a Liteon 5115 GHC recorder. Both players upstars cannot play the disc.

What is causing this? These are new discs. I rarely have trouble with Sony discs. Is it the software programs, the computer dvd writer, or the players? Thanks for your time.

This is frustratng b/c I now have 5 DVD RW coasters. My computer cannot recognize them, they just spin and spin until I eject.

PEGGY,
I would just try doing a system restore on your computer maybe a couple days or
weeks when you were not having a problem.Also just to be sure try doing a virus
check using which ever software you use to make sure your system isn't being affected by a trojan. Also try using a diffrent media to burn with like maxell dvd-r or
+r's which ever you use.So even though their not the greatest two dollars I think
for a 3 pack at walgreens or something if the liteon can read and play them you
will know it's probably a software problem and not your unit or system.
Good Luck ZAP.

Roxio is notorious for causing problems....what where you doing right up to the point it started saying invalid disc???

Well its not just Roxio, I also use CLoneDVD 2.1.9.12 the latest version.

I did upgrade my Mobo and CPU, and O/S from Win 2000 to XP SP2.

I don't want to speak for cc, but I believe he is saying that Roxio is notorious for causing conflicts as long as it's installed, ie., you don't need to have the app running to experience conflicts. And just to anticipate your next question, yes, Roxio can cause you problems later on even though your system ran smoothly with it previously.

Your burns fail only with previously erased RWs?. Is this correct?
Try erasing one of the RWs in Nero CD-DVD Speed (link in my sig if you don't have it). Tick full erase mode.
Try this disc.

Have you tried non-rewritable media?

Could you post a burn log?..both on the successful and failed burns please.

How do I post a burn log thru CloneDVD?

Full erase/format with Imgburn would be a good idea.

Well, my new discs are numbered, I tried two "invalid" discs, and imgburn cannot pick them up, they just spin and spin.

Hmm that screen shot came out very bad let my try again.