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Installing CityEngine 2012 after installing ArcGIS for Desktop 10.2 or ArcGIS Engine 10.2 results in a software authorization failure. The error received states:
"7109: Invalid Activation ID: ESU123456789-1020 [Incident# xxxx-xxxxxxxx]."
This error only occurs when authorizing CityEngine 2012 when ArcGIS for Desktop or ArcGIS Engine 10.2 are previously installed.
This does not affect installing other CityEngine products with ArcGIS for Desktop/Engine 10.2, or ArcGIS for Desktop/Engine 10.1 and earlier with CityEngine 2012.
Do not launch the ArcGIS Administrator from Start > All Programs > Esri.