I cann't post anything although successful installation

Hi,
 
I'm trying to post something in the demo version but I can only type subject - no body.
there is a box for typing the body but I have no option to type there anything, it's like a greyed out (without the gery).
 
Any ideas?
 
Thanks,
Shaly

do you get any Javascript error message?

Does the same thing happen on the online demo?

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