It is impossible to use the NPGSQL library in the strategy, the library versions mismatch,

=== Information about the pre-binding status ===
Log: DisplayName = System.Threading.Tasks.Extensions, Version=4.2.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
(Fully-specified)
Log: Appbase = file:// / C: / Program Files/MS123/Wealth-Lab Developer 6/
Log: Initial privatePath = NULL
Calling the build: System.Threading.Channels, Version=4.0.2.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51.
= = =
Log: this binding starts in the default download context.
Log: the application configuration file is used: C:\Program Files\MS123\Wealth-Lab Developer 6\WealthLabDev. exe.Config.
Log: The master node configuration file is used:
Log: the computer configuration file is used from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
Log: link after applying the policy: System.Threading.Tasks.Extensions, Version=4.2.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
Log: attempt to download a new URL file: / / / C: / Program Files/MS123/Wealth-Lab Developer 6/System.Threading.Tasks.Extensions.DLL.
Warning: when checking the assembly name, a mismatch was found: Revision Number
Mistake: failed to complete assembly installation (hr = 0x80131040). Verification terminated.

what can be done?

WL6 is not developed any more and not supported. I suggest you take a look at Wealth-Lab 7 and try to utilize the library there.

I allowed the problem.
It is necessary to add redirect versions to the WealthLabDev.exe.config settings file.
example:

CODE:
Please log in to see this code.

QUOTE:
Eugene - I suggest you take a look at Wealth-Lab 7 and try to utilize the library there.

I installed and used WL7 software.
This is my hobby, I did not see the point, for myself, in switching to the new version. sorry