Hmmm....I have an idea...after some tinkering...
The language bar is for the keyboard layouts right?
So How many keyboard inputs are there in the general tab? (image)
Add the one(s) you want, then go back to the language bar tab and select 'Docked in taskbar'
Then click apply and then you shoudl see it in the right of the taskbar...
At least this worked for me...
-Scott-