Today as it is, juice registers jquery in
https://github.com/appendto/juiceui/blob/master/Juice/JuiceApp.cs
In VS2012, all the webforms templates demonstrate registering jquery through AspNet.ScriptManager.jQuery package. This package makes it easier to register and update jquery scripts.
If you install juice in such projects then the user experience is broken since juice updates the jquery reference to a fixed version which is not present in the project
Juice library should be updated to remove the jquery dependancy from code and take a dependancy on this package