Error: Collada Export add-in requires Physx engine version 2.8.0

Hello,

When trying to export a model to collada I get the following error: "Collada export add-in requires PhysX engine version 2.8.0". I am running windows 7 pro x64, solidworks 2011 x64, and an NVIDIA GTX 480 with Physx version 9.10 and driver version 275.33. Does anybody know how to fix this? I have also attached an image of the error dialog.

SolidworksGeneral