Some PDN files wont open since reinstallign windows.

[cantstraferight]

A couple of months ago I reinstalled windows and since then some of my bigger PDN files wont open. 

 

They give a "The file is corrupt or was saved with a newer version of paint.net" error

 

Here's the full error

System.Runtime.Serialization.SerializationException: chunkNumber (3473456) read from stream is out of bounds (chunkCount = 987)

   at PaintDotNet.MemoryBlock.PaintDotNet.Serialization.IDeferredSerializable.FinishDeserialization(Stream input, DeferredFormatter formatter) in d:\src\pdn\paintdotnet\src\Core\MemoryBlock.cs:line 792

   at PaintDotNet.Serialization.DeferredFormatter.FinishDeserialization(Stream input) in d:\src\pdn\paintdotnet\src\Core\Serialization\DeferredFormatter.cs:line 118

   at PaintDotNet.Document.FromStream(Stream stream) in d:\src\pdn\paintdotnet\src\Data\Document.cs:line 1438

   at PaintDotNet.FileType.Load(Stream input) in d:\src\pdn\paintdotnet\src\Data\FileType.cs:line 477

   at PaintDotNet.Functional.Func.Eval[T1,TRet](Func`2 f, T1 arg1) in d:\src\pdn\paintdotnet\src\Base\Functional\Func.cs:line 158

 

 

While it's possible that they were corruped when I backed them up, it seems weird that it only happened to PDN files and everythign else is ok.

 

Could anything else have caused this like a plugin not being installed that I had before?  All these files were made around febuary this year, and I wiped my computer in June.

 

Some of these are important work files that if I cant restore I will have to remake. So any help is apreciated.

 

Thanks

[Rick Brewster]

The file is corrupt or truncated.

 

It may have happened to other files ... have you examined them all?

[cantstraferight]

 

I've been going through files and pdn's seem to be the only thing that have problems so far.

 

It's possible that it's because they are the biggest files that I backed up. It seems to mostly be the big PDN's that are like this. They range from 1mb to 325mb

[Rick Brewster]

System.Runtime.Serialization.SerializationException: chunkNumber (3473456) read from stream is out of bounds (chunkCount = 987)

 

Yeah they're just simply corrupt. That file is supposed to have 987 chunks (blocks), but one of the chunks is saying it's the 3,473,456th chunk.

 

Hopefully you have a backup :-\

 

Some file types can survive some corruption, like JPEG and many video formats. PDNs do not tolerate it.

[midora]

I'm not sure but maybe pdn2png with the /split option may extract the valid layers.

[cantstraferight]

Some files are giving different errors, but I think they are all goners.  Not sure what happened to them when I copied them to my homeserver.

 

I tried pdn2png but it just gave errors.

 

Sadly this was the backup.  I guess this has taught me to check my files after backing them up.

 

Luckily I've found a flat version of the only one that really mattered, but it would have been nice to have a layered version for future changes.

 

Thanks for the help guys.