I have a small project in C# that uses two external dll files. One is the Redmine.Net.Api.dll and the other is NLog.dll. I'm using Visual Studio 2010. I added both files as Reference to my project. The problem is that when I run the project in Debug mode, it compiles, but when I switch to Release, it says:
Error 1 Could not load file or assembly 'file:///C:\project\lib\Redmine.Net.Api.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515) C:\project\SGEN project
How can I fix this?
There are some workarounds for this issue: The dll file may not be in /bin folder. Just copy the dll file to /bin folder or set this preference Copy Local = True from Visual Studio. If the problem persists, check if the version of the assembly that is referenced is different than the version it is looking for.
In summary if you get the "Could not load file or assembly error", this means that either your projects or their references were built with a reference to a specific version of an assembly which is missing from your bin directory or GAC.
Did you download Redmine.Net.Api
dll from the web? If yes, then browse to it with Windows Explorer, right click on it and choose properties. There you should click 'Unblock'. It might have been blocked for some reasons.
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