Error when trying to link authenticator

Hey,

So, whenever I type "exec 0 linkauth" I get this error: http://prntscr.com/9m6s18
I even deleted my antivirus since I thought that antivirus was causing this problem but I still get this error. Linking authenticator with waylaidwanderer's trade offer bot is working fine, but I can't manage to link authenticator with this particular bot. Any clue on how to fix this ?

Thanks in advance.

[RafalNiewinski]

Do you have latest version from repository?
If you answer says yes try to remove newtonsoft.json from references and add it again from NuGet, then recompile your solution.

[BlueRaja]

Looks like a bad dependency. Does #913 fix it?

#913 Fixed it.
Thanks :)