Now two pieces of info now i have loaded again. New one on its own is ticked. The already loaded:- ticked, 'jit compiler for virtual machine enabled'. Not ticked 'java console enabled' and 'java logging enabled'. I presume those two should be ticked so may have wasted time with new download. I will wait for further instructions. Thanks for help so far.
I will ask JT to see whether he can come up with any suggestions as to what may be causing this for you - If he has any thoughts on this I will post them here.