Locked out of Android Vortex MID *permission denied with ADB
I know I'm a bit late, but you can remove the lock by performing factory reset.
To do that:


Shut down the tablet
Hold volume up key and power button at the same time
Recovery boot menu will open. With volume keys select wipe data and press power button.
The tablet will do a factory reset, all data will be lost and pattern lock will be removed.


You probably got denied permission on ADB because debug mode wasn't on.