.NET 4.5 cannot find "System.Net.Http.Formatting, Version=4.0.0.0"

[kamranayub]

I tried installing PerfIt on .NET 4.5 project (MVC 4) and it failed with the following message:

An exception occurred during the Install phase.
System.IO.FileNotFoundException: Could not load file or assembly 'System.Net.Http.Formatting, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

I have System.Net.Http.Formatting in the bin, but it is version 4.1.10809.0

[aliostad]

I just tried an MVC 4 app (selected Empty in the next dialog) and then changed to .NET 4.5. Then typed

PM> Install-Package PerfIt

And it worked. So cannot reproduce your issue. Can you please report the exact steps?

[kamranayub]

Installation of the package worked, but I was following your blog post, so next I added an Installer class, then ran

installutil -i mydll.dll

That's where the message came from, sorry, should have specified.

[aliostad]

I just tried and it all worked fine. Did you run it in administrative mode?

If does not work, please create a GitHub project and share so I can have a look. It all work my side.

[kamranayub]

The issue was that I was using a pre-release version of WebApi.Client package. I reverted to the stable release and now it works, thanks.

[aliostad]

Thanks for using it. Please keep feedbacks, comments coming.