Safari open in Dashboard not working

Wonder if any one can solve this mystery for me, iam trying to place a web clip on my dashboard by using the open in dashboard option in safari but every time I select add, nothing happens, I ve tried to remove com.apple.dashboard.plist and I've had no other CSS style selected but no luck, I've tried this on my mates 2011 imac and it works fine but not on my late 2012 mac. Any ideas welcomed , thanks

 

Tried both but no joy, its really got me puzzled, there's no reason why it shouldn't work