rake test:functionals -> Task not supported by ''

Google turns up little, and nothing with an empty supported-by string.

Apparently I've bent something, but I don't know what. Will someone please help me get back on track?

If the problem is a source code change rather than an environment change, have you tried revert to previous source to see if you can isolate the change that broke this? (if you are using git then git bisect is designed for this sort of stuff)

Fred