ZWO 224 camera connects but doesn't capture

I have a ZWO 224MC which I'd like to use with SGP. I installed the ASCOM driver and this appears as an option in the camera drop-down list, and I can connect to it and set the camera gain etc.

However, I can't actually capture anything with the "frame & focus" tool or the main sequence. The camera works via SharpCap.

Any suggestions?

I did notice that two ASCOM entries appear in the drop-down. Could the ASCOM driver installation be corrupt?

Thanks,

John Wheeler