In case you didn't get to the end of my penultimate thread, Silhouette America has just come out with a way of circumventing the problems caused to Cameo1 users by the Windows 10 recent update.
If you have this problem, check their site. I haven't tested it yet.

Also I found BrianP's hack re using a splitter for this problem worked first time. Has been a bit temperamental since but then it always was!