Suddenly, with no references changes, I am getting this error in my website in VS2015:
Could not load file or assembly AjaxControlToolkit, version=15.1.3.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e or one of its dependencies.
Parameter is incorrect.
HRESULT 0x80070057 E_INVALIDARG
What????
I am unable to develop on this site.
Help is MOST appreciated.