Hi, gdivis!!
I followed your advices and it's works, thank you a lot!

But i think there is necessary to change the doc little bit:

Anyway, thank you one more time!

I used next command line:
PS C:\Projects\BuildMasterTestExt\BuildMasterTestExt> dotnet inedoxpack pack --build
Executing dotnet publish for BuildMasterTestExt.csproj (net9.0)...
No extensions were found in C:\Users\Administrator\AppData\Local\Temp\inedoxpack\1ea02a181d38472a8e7df22454cef502

But earlier I tried the variants as in documentation:
PS C:\Projects\BuildMasterTestExt\BuildMasterTestExt> dotnet inedoxpack pack --build Release
Unhandled exception. System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Projects\BuildMasterTestExt\BuildMasterTestExt\Release'.
at System.IO.Enumeration.FileSystemEnumerator1.CreateDirectoryHandle(String path, Boolean ignoreNotFound) at System.IO.Enumeration.FileSystemEnumerator1.Init()
at System.IO.Enumeration.FileSystemEnumerable`1..ctor(String directory, FindTransform transform, EnumerationOptions options, Boolean isNormalized)
at System.IO.Enumeration.FileSystemEnumerableFactory.UserFiles(String directory, String expression, EnumerationOptions options)
at System.IO.Directory.InternalEnumeratePaths(String path, String searchPattern, SearchTarget searchTarget, EnumerationOptions options)
at Inedo.ExtensionPackager.Program.PackAsync(InputArgs inputArgs) in C:\ProgramData\BuildMaster\Temp\Service_E436979\Inedo.ExtensionPackager\Program.cs:line 67
at Inedo.ExtensionPackager.Program.PackAsync(InputArgs inputArgs) in C:\ProgramData\BuildMaster\Temp\Service_E436979\Inedo.ExtensionPackager\Program.cs:line 232
at Inedo.ExtensionPackager.Program.Main(String[] args) in C:\ProgramData\BuildMaster\Temp\Service_E436979\Inedo.ExtensionPackager\Program.cs:line 25
at Inedo.ExtensionPackager.Program.<Main>(String[] args)
2.

Then this two:
PS C:\Projects\BuildMasterTestExt\BuildMasterTestExt> dotnet inedoxpack pack --build .\bin\Release
No .csproj files were found in C:\Projects\BuildMasterTestExt\BuildMasterTestExt.\bin\Release and --build was specified.
PS C:\Projects\BuildMasterTestExt\BuildMasterTestExt> dotnet inedoxpack pack --build bin\Release
No .csproj files were found in C:\Projects\BuildMasterTestExt\BuildMasterTestExt\bin\Release and --build was specified.

Hello!
I've got the problem with inedoxpack error:
No extensions were found in C:\Users\Administrator\AppData\Local\Temp\inedoxpack\9ceaae0893bc46e8b9ec31c0108cea18

I tried as global so and local installation.
The command was executed in powershell v5.1.17763.592 (Windows Server 2019 Standard)

Can anyone help me with it?