Problem:

When launching or installing a Nuance Desktop product on a Windows Vista Operating System, the following error may appear:

Error while unpacking program, Code 2. Please report to author

Cause:

Microsoft released a new security update for Windows Vista on July 11, 2011 (KB2533623) that has caused problems with certain software.  Problems that may occur include not being able to launch or install certain third party applications on Microsoft Windows Vista

Solution:

We are aware of this issue and are currently working with Microsoft to resolve the problem.  Until this issue is resolved, the only way to continue using the Nuance application is to remove the specific Microsoft update. 

To remove this KB2533623 Windows Update, follow the steps below:

  1. ClickStart > Control Panel > Programs and Features”.
  2. Click theView installed updates” link on the left side of the window.
  3. Locate theUpdate for Windows Vista for x64-based Systems (KB2533623)” update.
  4. Select the KB2533623 update and then click theUninstall” button.
  5. Once the update has been removed, restart the computer.
  6. After the computer restarts, confirm that the Nuance Desktop application can now be launched or installed.

Source: Dragon Knowledge Base; Answer ID 6301