The root cause is the updater updated Adobe Flash, which tried to install the extension above by Extension Manager in the installation. However, this extension was NOT signed with the updated Adobe certificate, so the extension installation will be rejected by Extension Manager. That is what you got. We have sent this issue to Flash team.
If you don't use Flash, you can manually edit C:\Program Files\Adobe\Adobe Flash CS6\XManConfig.xml, and remove the line <Data key="SupportedInSuite">CS6</Data>. Thanks.
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The certificate used to sign 'Adobe_Flash_Professional_Toolkit_for_CreateJS' is the same certificate for InDesign. It was revoked so this extension can't pass the signature validation. If you don't intend to use Flash, you can ignore this warning safely.
There is a tech note about this problem at http://helpx.adobe.com/flash/kb/error-installing-toolkit-createjs-11.html. You can download and install the new signed extension from the link provided in this page.