Quit Bridge CS6, if it's already running.

Navigate to the folder location mentioned below:

• Windows: C:\Users\<user name>\AppData\Roaming\Adobe\Bridge CS6\
• Mac: /Users/<user name>/Library/Application Support/Adobe Bridge CS6/

Back up the Export Panel folder at a location that you can remember, such as your desktop.

After backing up, delete the Export Panel folder from the Adobe Bridge CS6 folder mentioned above.

Navigate to the folder location mentioned below:

• Windows: C:\Program Files\Adobe\Adobe Bridge CS6 (32- or 64-Bit)\PublishPanel\Factory\zxp\
• Mac: Do the following:
  1. Go to /Applications/Adobe Bridge CS6/
  2. Right-click the Adobe Bridge CS6.app file and select Show Package Contents from the context menu. 
  3. Now, navigate to Contents/Resources/PublishPanel/factory/zxp/ folder in the Adobe Bridge CS6 application contents.

In the zxp folder, you'll find these .zxp files - Computer_Upload.zxp, Facebook_Upload.zxp, Flikr_Upload.zxp, Photoshop.com_Upload.zxp. 

Back up all the .zxp files. After backing up, delete the .zxp files from here.

Download the Archive.zip file attached below and unzip it.

Copy all the individual .zxp files from the unzipped content and paste them inside the zxp folder mentioned in Step 3 above.

Launch Bridge CS6.