Not to long ago, GSX released its beta version of 1.9.11. There were some bugs especially with the new coutal 3 engine, but that has been fixed in the stable version. All other scenery will be updated to the new coutal 3 program. Expect installers in the next few days. As of now, whenever you install new scenery, make sure you reinstall GSX. It has to be the last program installed. You can get the new update here.