KB: Disabling BigShot’s support for Microsoft Active Accessibility (MSAA)



KB#: 050
Last updated: March 01 2006



The information in this article applies to:

  • BigShot 2.xx


BigShot utilizes Microsoft Active Accessibility (MSAA) to track on-screen program activity, such the activation of menus and dialogs and movement of the caret (text entry point). Although MSAA does an excellent job of providing tracking information, it is also known to generate errors or crashes in some applications and dialogs.

Many of MSAA related errors can be eliminated by installing a newer version of the software in which the problem occurs. If a newer version of the software is not available or does not resolve the problem, the problem may be eliminated by disabling BigShot's support for MSAA.

To disable BigShot's MSAA support:

  1. In the Windows Start menu, select Run.
  2. In the Run dialog, type Regedit, then click OK.
  3. In the Registry Editor, navigate to the following key (folder):

    HKEY_LOCAL_MACHINE\Software\Ai Squared\BigShot\2.0\Settings

  4. Right-click on the string value labeled "DisableMSAA" and select Modify.
  5. In the Edit String dialog, set the 'Value data:' field to 1, then click OK.
  6. Exit the Windows Registry application.
  7. Restart BigShot.