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There is a bug with Adobe AIR that can randomly cause your system to disable Adobe AIR automatic updates. This can cause a problem when updating StudioCloud. An image of the error is below.
If this is the error you are receiving then please install the settings Manager application available at http://helpx.adobe.com/air/kb/archived-air-sdk-version.html#main_Disable_automatic_updates_of_the_runtime_ and then use that to Enable Adobe AIR automatic updates.
After you have done that please retry the StudioCloud update.