Did you try running the executable as Administrator? (right click exe file and choose "Run as Administrator")
Another Note: The RAID1 volume status can also be seen during booting. The Intel Rapid Storage Technology Option ROM shows the status. In fact, if the status is not normal (i.e. degraded or failed) I have noticed that the Option ROM screen will be shown longer... around 10 seconds or so.
I tried running aistorui.exe as Administrator. It still hangs after rendering only the border of the GUI window. Also, based on hints in another thread regarding aistorui.exe issues I turned on .Net 3.5 in addition to .Net 4.0. I recognize that I do get some information during POST.