Problem:

Configuring the “Drop Location Access” as “Through Release Management Server over HTTP(S)” with Release Management I get the following error:
“Message: Could not load file or assembly 'Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies.”

Solution:

Copy Newtonsoft.Json.4.5.1, net40 into the bin folder of Release Management “C:\Program Files (x86)\Microsoft Visual Studio 12.0\Release Management\bin”.

To get a copy of the correct version of newtonsoft.json I created a class library project in Visual Studio and issued this command from the package manager console:
“Install-Package Newtonsoft.Json -Version 4.5.1”

Then I copied the file from the packages folder “Newtonsoft.Json.4.5.1\lib\net40”.