Hallo, I've the same problem on Mac but using only Eclipse 4.2.2
I can not edit the lable, the name and the size of the objects, even if I can obtain some result working in the txt please don't tell me that's the solution....).
I've installed a fresh new Eclipse 4.2.2 and then updated the software as described...
The only fear is that I'm in Mac OS X.
Thanks,
Paolo