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IrfanViewr error'ing on loading PDN files with newer Paint.NET version


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Have an issue with IrfanViewer 32-bit that cannot load PDN files.

- Not a Paint.NET issue, but a question that maybe I can pass information over to the IrfanViewer forum.

 

Issue is when I use Paint.NET v 4.3.7

- when I delete many layers or merge many layers, or both, IrfanViewer fails to load the PDN file.

 

Was there a change on layer from Paint.NET v4.2.13 to Paint.NET v4.3.7?

If yes, I could probably pass that information over to the IrfanViewer dev(s) to fix their plugin.

 

Thank you for your time.

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PDN3 files contain serialized .NET code.

I guess the switch to .NET5/.NET6 changed something there.

The deserializer in this plugin is not based on any .NET libraries. It's pure C code.

I'm wondering that it worked for so long. 😉

 

You may check what's happening loading the file with a paint.net release < 4.3 of paint.net or maybe add such a file zipped so if someone is interested and has enough time can have a look to the differences.

Edited by midora

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There was no change in the file format in the code, but @midora may be onto something with the .NET 5/6 update. That may have changed some version numbers in the embedded type names, at least.

The Paint.NET Blog: https://blog.getpaint.net/

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