Error Void OpenBveApi.FileSystem.FileSystem.AppendToLogFile(System.String)

Hello,
I installed Openbve (1.10.0.1) on a new pc, but when I try to load any route I get the following error message:

Could not find 'Void OpenBveApi.FileSystem.FileSystem.AppendToLogFile(System.String)' method.


How can I solve the problem?
Thank you for your support.

Now that's a very strange message.
It thinks it can't find a pretty critical API method.

How exactly did you install it, and on which operating system?
If Windows, please check that Windows Defender hasn't decided to quarantine anything. (It sometimes does this, and unfortunately I have no way of stopping this)

I've installed it on Windows 10 Home (version 22H2), extracting the .zip archive in 
C:\Users\USER-NAME\Desktop\Openbve.

I've found no files in Windows Defender quarantine.