ApertureToPBase is an Apple Aperture export plug-in that uploads photos to PBase.Download the latest version, unzip and place it into your /Library/Application Support/Aperture/Plug-Ins/Export for all users or ~/Library/Application Support/Aperture/Plug-Ins/Export folder for just your user account. You will probably have to create the folder.

If you have any support issues please post in the PBase forum.