How can I get Glimpse to work with EF6?
For those of you looking for a workaround:
It looks like it's a bug within EF itself (it was mentioned as 173 above, but the link is correct). You can either wait for EF 6.1.1/6.2 or you can downgrade to EF 6.0.2 and it will start to work again.
In the Package Manager Console, type this:
Install-Package EntityFramework -Version 6.0.2
and you should be good to go.
But only if EF 6.0.2 is an option for you. Good luck.