I've installed the latest version of LibFredo v8.0, am running Sketchup 2017 on Mac OS High Sierra. Every tie I restart Sketchup, I get the message 'You must intstall LibFredo6 version 6.9 or higher to run Fredo6_RoundCorner. But I have version 8 installed. When I go to my Extension Manager, it shows that LibFredo ver8.0b - 19 Nov 17 is installed and enabled. Why do I keep getting this error message?

Alan