SGP version 4 will not connect to my SBIGSTF 8300 no problems with version 3
At least for now, you’ll need to install the 32-bit version of SGPro 4. We’re looking into 64-bit support for SBIG currently.
That said, you would probably be OK just using the SBIG ASCOM driver with 64-bit SGPro.
https://diffractionlimited.com/down/DLImagingASCOMDriverInstaller.exe
I am fine with V3.1. What advantages does V4 have?
Peter