Help Setting my default Homescreen

Hi guys.

I have had to get a new S2 handset delivered as my old one had fault. The problem I am having is that I cannot set the homescreen. I have told it to select the Samsung Homescreen but everytime i use it and hit the Home button it then agains asks me you selct my homescreen. This is getting very frustrating. I did not have this problem with my old handset.

Any ideas?