Hi,
I get an "incorrect function" message with a DVD+R (bitsetting DVD-ROM with Nec ND-3500AG) I burned on all my 4 drives. It's set on UDF so I first thought that might be the reason, but all the other UDF-DVDs work flawlessly. The disc does even work on my DVD-player, it just stops in the middle of the second movie (several discs already did that so I assume it's the DVD-player acting up).
Anyways, even though I get an incorrect function, I can make images with Alcohol or Nero without an error message!!! It's just that the Alcohol image won't load (saying invalid image) and the Nero image loads, but when I try to access it, I get - an incorrect function!!!

Any idea what and why this could be? Just a faulty burn? Is there any way I can rescue the data on the disc???

Thanks in advance
Markstar

P.S.: I'm running Win2k SP4.

Here a part of the media info:

Disc Type DVD+R
Book Type DVD-ROM
Manufacturer RiTEK Corporation
Media ID RITEKR02

Is this a DVD Video compilation that you authored yourself?
It might be a noncompliant image.

You say that it stops halfway through the 2nd movie?
Do a transfer rate test on the disc in your 3500A to see what happens.
www.cdspeed2000.com

Yes, I created the disc myself (Nero, simply 3 avi-files).

I attached a screenshot of the CD-DVD Speed testrun. It looks alright, despite the fact that all my burned DVDs are being read rather slowly.

So why do I get an incorrect function while it still can read the DVD???

Edit: BTW, the firmware was 2.F9 RPC1 and the media was burned with 2.4x (I usually go slow since I want maximum burn quality over speed)

I still suspect that the file having trouble playing in your standalone DVD player was not authored correctly. If it is still in .AVI format, most DVD players won't be able to recognize it.
Copy it back to your harddrive and run it through Nero Vision Express or another authoring program to create DVD compliant video files.

No, my DVD player is a Yamada DVX-6600 and plays everything I throw at it DivX3, DivX5, XviD, etc.

And my problem (at least the one I wanted to address in this thread) is NOT with the DVD player but reading the disc on ALL my computers (2 computers + 1 notebook = 4 DVD drives). Everywhere I get the "incorrect function" and I can't access the disc in the explorer.

As I said, I can make an image which I can not access. I'd really like to copy the files back to my computer!!!

Is it possible that the original video file was corrupted?
If that was the case, you could copy the file back and forth all you like but it would not be playable anywhere.
You may also want to try ripping an ISO with DVDDecrypter just for the hell of it.
ISOBuster should allow you to extract the possibly corrupted Video file and then you could probably find an app to repair it.

Yeah, that worked!!!
Interestingly I had tried a solution similar to yours but with different tools (I tried Alcohol and Nero as image creating tools and Alcohol and WinISO for trying to access the created image). But that didn't work (WinISO wouldn't even open the image) so that's where I gave up.

But your solution worked, the image was created and I could extract the files. There was no need of fixing them since they weren't broken (the problem must have been somewhere with the file system). Everything perfect now.

Thank you!!!

Your welcome
Glad it worked out for you.