So i solved this problem by myself.
Here is explenation:
The problem was loading Newtonsoft.Json.
Because I have another application installed on my system that uses the same Newtonsoft.Json version of the library, the loading of the library was rerouted from another source (GAC or Global Assembly Cache) and loading the library using the GAC takes precedence over loading the library in the “Dependencies” folder of the Editor X.
So I needed to create a configuration file named "
Tap.exe.config" that I placed in the folder with “tap.exe” as shown in the image below: