0.45.1: can't open 7zip using ArchiveFactory.OpenArchive()

The following 7zip file can't be opened using ArchiveFactory.OpenArchive() in version 0.45.1.
It worked in older version.

The exception I get:

Exception thrown: 'System.IO.FileLoadException' in SharpCompress.dll
An unhandled exception of type 'System.IO.FileLoadException' occurred in SharpCompress.dll

Could not load file or assembly Microsoft.Bcl.AsyncInterfaces, Version=10.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51 or one of its dependencies. The manifest definition of the found assembly does not match the assembly reference. (HRESULT exception: 0x80131040)

File: (please extract the ZIP file first to get the 7ZIP file)

cheat.zip

[adamhathcock]

What was the code you used for this?

What platform?

I have Windows 10 (latest update), Visual Studio 2026 Community (latest update), and I use C# in .NET Framework 4.8.

The code line throwing the exception (use the attached file):

IArchive archive = ArchiveFactory.OpenArchive("cheat.7z");

[adamhathcock]

It's weird because I've got a windows 11 machine with my .NET 4.8 test and it's fine loading things.

Are you sure there's not a conflict somewhere else? Are you using package locks to see what versions you're downloading?

I have no problem downgrading things but I just want to make sure this is a real problem vs a config issue somewhere else with the legacy framework

Are you sure there's not a conflict somewhere else? Are you using package locks to see what versions you're downloading?

I don't know what that is.
I just download the nuget using visual studio and update it using visual studio too.

[adamhathcock]

If you explicitly add Microsoft.Bcl.AsyncInterfaces as a dependency does that help? Try versions 10 and 8

It's not working with 10 or 8.

• Version 10 gives the exception above.

• Version 8 gives another exception (on the same code line).

Installed ZstdSharp.Port version 0.8.7

System.TypeInitializationException: 'The type initializer for SharpCompress.Factories.Factory threw an exception.'

FileLoadException: Could not load file or assembly ZstdSharp, Version=0.8.6.0, Culture=neutral, PublicKeyToken=8d151af33a4ad5cf or one of its dependencies. The manifest definition of the found assembly does not match the assembly reference. (HRESULT exception: 0x80131040)

If you explicitly add Microsoft.Bcl.AsyncInterfaces as a dependency does that help?

What exactly do you mean by this? I have installed the nuget package Microsoft.Bcl.AsyncInterfaces and tried version 10 and 8.
Is this what you mean?

Is it normal sharpcompress package is downgraded back to an older version if I downgrade Microsoft.Bcl.AsyncInterfaces from 10 to 8?

[adamhathcock]

I meant version 10.0.0 like it's asking for.

There's a dependency problem here and I'm not sure how to solve it with your older set up.

ZtdSharp is only used by older versions. You shouldn't need it anymore.

I don't know what else to do :(
In both cases, there is an exception.

Why did it work in older version of sharpcompress? It always worked until I updated to the latest version and I didn't change anything to my set up.

[adamhathcock]

which older version works for you as-is?

Sorry I don't know.
So this issue can't be fixed?