VM3331:2 Uncaught ReferenceError: skuid is not defined error on Console

Hi,

I have checked Development Mode to write some VF stuff

and had to see some model data on Console to trouble shoot an issue

Saw an error : VM3331:2 Uncaught ReferenceError: skuid is not defined

but when I go remove the Development Mode, then only the skuid api started working on Console.

Any idea how can we get this though I have Dev Mode active ?