I email Unigine support,this is the response ;
UH support-"Hello!
Try to change preferences of Java Security in Java Control Panel."
me-"I would appreciate if you wore a bit more specific ..what preferences ??"
[IMG=http://img839.imageshack.us/img839/2195/javaot.jpg][/IMG]
UH support-"Sorry for my mistake.
I mean settings. We can't say more exactly what settings of Java
Security because we can't reproduce this issue. But we assume now that
the problem is in Java Security settings."