I've encountered an strange issue after installing RestKit with cocoapods.
after resolving RestKit dependency for my project with cocoapods and trying to build it, I face this error:

> 
> The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.
> 
> 
> 

I tried running `pod install`, but no change.

Here are some shots:
![enter image description here](https://i.stack.imgur.com/mrTp5.png)

![enter image description here](https://i.stack.imgur.com/N5W2w.png)

```
  PODS:
  - AFNetworking (1.3.3)
  - RestKit (0.20.3):
    - RestKit/Core
  - RestKit/Core (0.20.3):
    - RestKit/CoreData
    - RestKit/Network
    - RestKit/ObjectMapping
  - RestKit/CoreData (0.20.3)
  - RestKit/Network (0.20.3):
    - AFNetworking (~> 1.3.0)
    - RestKit/ObjectMapping
    - RestKit/Support
    - SOCKit
  - RestKit/ObjectMapping (0.20.3)
  - RestKit/Search (0.20.3):
    - RestKit/CoreData
  - RestKit/Support (0.20.3):
    - TransitionKit (= 1.1.1)
  - RestKit/Testing (0.20.3)
  - SOCKit (1.1)
  - TransitionKit (1.1.1)

DEPENDENCIES:
  - RestKit (~> 0.20.0)
  - RestKit/Search (~> 0.20.0)
  - RestKit/Testing (~> 0.20.0)

SPEC CHECKSUMS:
  AFNetworking: 61fdd49e2ffe6380378df37b3b6e70630bb9dd66
  RestKit: 1f181c180105a92f11ec4f6cd7de37625e516d83
  SOCKit: 2f3bc4d07910de12dcc202815e07db68a3802581
  TransitionKit: d0e3344aac92991395d4c2e72d9c5a8ceeb12910

COCOAPODS: 0.29.0

```