> Source: [sk77960](https://support.checkpoint.com/results/sk/sk77960)

# sk77960 - "Object reference not set to an instance of an object" error from Microsoft .NET Framework when opening "Mobile Access" tab in SmartDashboard

| Property | Value |
|----------|-------|
| Solution ID | sk77960 |
| Date Created | 2012-06-25 |
| Last Modified | 2016-07-01 |
| Technical Level | Advanced |
| Products | Security Gateway, Security Management Server, SmartConsole, Multi-Domain Security Management Server |
| Versions | R82.10, R82, R81.20, R82.10, R82, R81.20, R82.10, R82.10, R82.20, R82.20, R82, R81.20, R81.20, R82, R82.20 |

## Symptoms

- * When opening '`Mobile Access`' tab in SmartDashboard, the following Microsoft .NET Framework error pops up:

  ```
  
  Unhandled exception has occurred in a component in your application.
  If you click Continue, the application will ignore this error and attempt to continue.
  
  Object reference not set to an instance of an object.
  
  Details
  
  *** Exception Text ***
  System.NullReferenceException: Object reference not set to an instance of an object.
  ```

* Debug of FWM daemon (per [sk86186](http://supportcontent.checkpoint.com/solutions?id=sk86186)) shows:

  ```
  
  data from handler=
  ( :operation (dereference)
    :body (
      :result_code (2001)
      :err_string ("General Error: Invalid or No UID")
      :dbg_msg ("CDleDereferenceReqHandler::_dereferenceSingleFieldObject not found in CPMI")
    )
  )
  ```

## Cause

One of the UIDs is missing from `$FWDIR/conf/connectra_policy.C` file on Management Server.

## Solution

This solution requires authentication. Please log in to view the full solution.

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