Hi Umberto - I've been a happy user of GSX for several years, currently running v1.9 with FSX SP2 on a HDD. But just added a large SSD to my system, and am planning to install FSX-SE on the SSD in coexistence mode (i.e. in a separate FSX-SE folder on the SSD with its own directory entry and .cfg file set), and gradually migrate my favorite add ons over. I understand from the forum that GSX now works with FSX-SE. But does the GSX installer support parallel FSX and FSX-SE installations ?