My deliverer: DutchDigitalImaging says that Terry has said that SGP can not handle two SX cameras.
My experience is that it always brings trouble: SGP does not react anymore...
I used the drivers for the Lodestar from the CD-rom which was delivered with the Lodestar X2 camera (May 2015) and the drivers from the CD-rom which was delivered with the Trius-SX35 (november 1915)
Do you use SGP with all equipment connected? And do you have Windows 10?
