A reference to 'C:\Program Files\Phidgets\phidget21.dll' could not be added. Please make sure that the file is accessible, and that it is a valid assembly or COM component.
I have tried adding the dll to the following C# project types:
- Windows Form Project
- WPF Project
- Windows Store Project ("Metro Style")
It is really the "Metro Style" project that I most want to use dll in. Anyway, regardless of the project type I get the same error message when attempting to add the reference.
If anyone knows of a workaround to past this I would be interested in that as well.