Could not load file Newtonsoft Json

Question

I am developing a Ribbon control and I want to use JSON.NET. I'm having this error :

Could not load file or assembly 'Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The system cannot find the file specified.

I've tried a couple of things, that I found here in stackoverflow such as:

reinstall JSON.NET, with nuget console;
Open up packages.config
Delete the Newtonsoft.Json entry.
Save and Build Re-add Newtonsoft.Json from NuGet.
Build and run
checked files on bin folder

nothing seems to work, any ideias?

Are you 100% sure you have 4.5.0.0 version of JSON.NET? Then try changing x86 to any CPU in build config of your solution — Kamil Budziewski, Sep 02 '13 at 11:06
actually on web.config file I have the version 5.0.6, why does the error says 4.5.0.0? And yes CopyLocal is set to true — nhenrique, Sep 02 '13 at 11:08
Check out the answers to this similar question: http://stackoverflow.com/questions/17776090/newtonsoft-json-assembly-conflict/21639708#21639708 — zbarrier, Feb 07 '14 at 23:43

score 2 · Answer 1 · answered Sep 02 '13 at 11:13

2

Do any of the other projects in the same solution also reference Json.Net? It may be that different projects in the same solution refer to different version of Json.Net.

answered Sep 02 '13 at 11:13

dcastro

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This is the only project on this solution. It's the first time that I'm using(trying) JSON.net – nhenrique Sep 02 '13 at 11:17

score 1 · Accepted Answer · answered Jun 16 '14 at 13:12

Finally I found my solution:

Right-click on the "references" of your project.
Add a referencec
In the framework tab, type "json.net". I had two versions: 4.5 and 6.0. I only checked 4.5 and left the 6.0 unchecked.
Rebuild and relaunch the project, and this error disappeared for me.

Could not load file Newtonsoft Json

2 Answers2