So, this is supposed to allow you to do “database design work for any SQL Server platform” within Visual Studio, blah blah blah.
Unfortunately, it throws this error in Visual Studio 2010:
Uninstalling Juneau doesn’t fix it, neither does reinstalling SP1, nor following some other things I’ve seen suggested on the InterWeb.
Luckily I have a half dozen machines so it only happened on two of them (note to self: remember not to randomly start loading every CTP that looks interesting on multiple machines at once before determining if it hoses them).
Still looking around for a fix.