Mick - the new Evolution MC firmware is not applicable to your SE mount. If you were previously experiencing errors detecting the StarSense camera it is unlikely any firmware updates were involved in producing or fixing the error so you might want to watch for any unique cabling combinations (splitters, jacks in use, etc.) if the issue arises again.
Thanks for that Mike, I have the Aux Splitter when using SkyPortal WiFi Module with Starsense.
But I seem to get better alignments using the StarSense HC without Aux splitter.
I think you are correct that it's cabling, I just push the cable down on the mount when powering up.