OpenQA.Selenium.WebDriverException : Cannot find a file named '...\bin\Debug\getAttribute.js' or an embedded resource with the id 'getAttribute.js'

I have some tests that use Geckodriver to run a test in Firefox. Today, Firefox updated to version 50 on my development machine. I saw this error:

System.NotImplementedException : GET /session/ffffffff-ffff-ffff-ffff-ffffffffffff/element//attribute/ did not match a known command

I updated to geckodriver-v0.11.1-win64 and selenium-dotnet-strongnamed-3.0.0 (for .NET 4.0), thinking maybe Selenium and GeckoDriver just needed to sync up with the latest version of Firefox.

Now, when I run this test, I see two things:

1. Firefox crashes with a breakpoint (...?) A breakpoint has been reached. (0x80000003) occurred in the application at location 0x6fa3ed40.
2. LightIntegration.Browser.QUnit.Firefox: OpenQA.Selenium.WebDriverException : Cannot find a file named '...\bin\Debug\getAttribute.js' or an embedded resource with the id 'getAttribute.js'.

I checked, and sure enough, there's no file with that name. There never has been. Was I supposed to download this file somewhere?

(For what it's worth, the same test passes when run in Chrome.)

As @FlorentB. suggested, my version of Selenium is missing that exact file as a resource.

On the left is selenium-dotnet-strongnamed-3.0.0.zip, which I need to use because we strong name our application.

On the right is selenium-dotnet-3.0.0.zip

For some reason, getAttribute.js and isDisplayed.js are not included in the resources of the strong-named WebDriver (3.0.0.0) assembly.