Problem

After installing Flash Professional CS6 Update 2, the Adobe Extension Manager is launched to install Toolkit for CreateJS 1.1. However, if you are using MAC OS X 10.8.2, the Extension Manager throws the following error, and doesn't install Toolkit for CreateJS 1.1:

The extension Adobe_Flash_Professional_Toolkit_For_CreateJS does not contain valid signature. The extension will not be installed.

Note:

The error does not affect the Flash Professional CS6 Update 2 installation, and the Update is functional.

Solution

  1. Close the Adobe Extension Manager window.
  2. Download and install Toolkit for CreateJS 1.1 from this link.

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