I planned an interception with VIII army, and after I hit End turn, the Russian army advances and I get the intercept window to choose. I chose half forces and the game just froze. Nothing more happens, although I was able to select all forces (minimum, half, full). No interface button works.
See attached pic
I am playing gold upgrade kit, in a PC WinXP SP2, 4GRam, ATI 5750

