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Extension Manager not installing extensions

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I am having difficulty getting Extension Manager to install all extensions. 

 

The extension ‘Adobe_Flash_Professional_Toolkit_for_CreateJS’ does not contain valid signature.  The extension will not be installed.

 

The extension ‘LevelUpForPhotoshop’ does not contain valid signature.  The extension will not be installed.

 

Adobe Extension Manager CS6

Version:  6.0.2.40

 

Mac OS X

Version 10.7.5

 

Updated all Adobe applications last night. 


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