HELP!! "A necessary LIST header is missing." -ACID Product Family

Subject:HELP!! "A necessary LIST header is missing." Posted by: SlowX Date:3/28/2001 10:00:59 AM Hullo, While trying to open an ACID file that I thought I saved w/ embedded loops, I get: >>An error occurred while opening the file... The file is most likely corrupted or of an unknown format. A necessary LIST header is missing.<< The file partially opens (one or two tracks are still there), but that's it. Does anyone know how to get the info back for the file? Based on its size I doubt the loops are indeed embedded, but even to have to relink them would be grand. Anyone ever encounter this problem and know what I need to do to prevent it from hapenning again? Thanks in advance. --x
Subject:RE: HELP!! Reply by: DataCowboy Date:3/30/2001 3:35:41 PM A LIST header is a chunk of data in a RIFF file format (.ACD's are a form of RIFF file), so it looks like you've got a corrupted file. It may or may not be possible to fix - depending on a couple factors. First scenario, if the LIST header is bad because the file was only partially written, then you've really got nothing to fix - the data's gone. Second scenario, where there's just a one or even a few incorrect characters written into the file, it can be repaired with a hexadecimal/binary file editor if you know what the header should look like. If you've noticed the file is a lot smaller than it ought to be, the first situation is the likely one. Hex www.thefreeside.com
Subject:RE: HELP!! Reply by: SlowX Date:4/2/2001 8:53:52 AM Thanks for the info! And, yes, the file is smaller than it should be. I wonder if it's due to embedded files not being included, as opposed to missing data., allowing for me to relink sounds... Would that be possible? --x
Subject:RE: HELP!! Reply by: DataCowboy Date:4/2/2001 12:29:23 PM Yes, it's possible, but it might prove rather time consuming. You would need to copy the the hexadecimal data of the wave files into the acid file at the right locations, and possibly place in some additional chunk information. I have decoded a fair amount of the ACID file format (for a series of utilities I wrote for my own use mostly), and if you want I can take a look at the file to see exactly what is wrong with it. As long as it's under about 3 meg I can recieve it at hex@thefreeside.com. You're the first person I know who's had the problem so I'm interested to what Acid did wrong in the save. Hex www.thefreeside.com

Subject:HELP!! "A necessary LIST header is missing."

Posted by: SlowX

Date:3/28/2001 10:00:59 AM

Hullo,

While trying to open an ACID file that I thought I saved w/
embedded loops, I get:
>>An error occurred while opening the file...

The file is most likely corrupted or of an unknown format.
A necessary LIST header is missing.<<

The file partially opens (one or two tracks are still
there), but that's it.

Does anyone know how to get the info back for the file?
Based on its size I doubt the loops are indeed embedded,
but even to have to relink them would be grand.

Anyone ever encounter this problem and know what I need to
do to prevent it from hapenning again?

Thanks in advance.

--x

Subject:RE: HELP!!

Reply by: DataCowboy

Date:3/30/2001 3:35:41 PM

A LIST header is a chunk of data in a RIFF file format
(.ACD's are a form of RIFF file), so it looks like you've
got a corrupted file. It may or may not be possible to
fix - depending on a couple factors.

First scenario, if the LIST header is bad because the file
was only partially written, then you've really got nothing
to fix - the data's gone.

Second scenario, where there's just a one or even a few
incorrect characters written into the file, it can be
repaired with a hexadecimal/binary file editor if you know
what the header should look like.

If you've noticed the file is a lot smaller than it ought
to be, the first situation is the likely one.

Hex
www.thefreeside.com

Subject:RE: HELP!!

Reply by: SlowX

Date:4/2/2001 8:53:52 AM

Thanks for the info!

And, yes, the file is smaller than it should be. I wonder
if it's due to embedded files not being included, as
opposed to missing data., allowing for me to relink
sounds...

Would that be possible?

--x

Subject:RE: HELP!!

Reply by: DataCowboy

Date:4/2/2001 12:29:23 PM

Yes, it's possible, but it might prove rather time
consuming. You would need to copy the the hexadecimal data
of the wave files into the acid file at the right
locations, and possibly place in some additional chunk
information.

I have decoded a fair amount of the ACID file format (for a
series of utilities I wrote for my own use mostly), and if
you want I can take a look at the file to see exactly what
is wrong with it. As long as it's under about 3 meg I can
recieve it at hex@thefreeside.com. You're the first person
I know who's had the problem so I'm interested to what Acid
did wrong in the save.

Hex
www.thefreeside.com