I installed the beta version and ran it. It was unstable, made lighting flash on and off. Very unpleasant. Went back to regular version. Then, when the recent update occurred, and we all updated the regular viewer, my version of the regular version became like the Beta version. It has rainbow frames around all the buttons and is unstable and lights flash on and off constantly. How can I stop this? I am running Windows 8 by the way.