Okay so just updated to the latest tools for the ur28m v 220 mac and I can’t open any Steinberg products because it says there’s no valid license.
I can open the elicenser and it identifies my dongle and can see all of my licenses however no Steinberg products can see my dongle so I cannot open any freaking products.
Update. After rebooting a few times and reinstalling the new tools a few times nothing had changed so I reverted back to version 216 of the tools for the uR 28 M and everything is working fine.
Steinberg should look into the compatibility of the new tools with Sierra
Hi there
I see this quite a bit, the answer is usually to update the elicencer software which normally does the trick.
Best Regards, Dave
Good advice Dave thank you.
I had expected that since the UR28M tools I just installed was placed on Steinbergs website March 28th 2019 it should include the latest eLicencer but It did not.
So I downloaded a brand new eLicencer and have the Steinberg instruments, plugins and C10 working again… however the new Audio Unit versions do not work in Logic Pro unfortunately . Anyone get them working in Logic yet?
Maybe some information here…
Regards. 
Thanks Prock. Might be the USB driver. I’ll try that.
I updated the USB driver and it seems to have fixed the issue. Cheers