Durante Latzo

I know this is an old post but commenting in case anyone else stumbles across it troubleshooting the problem. I have had this same exact problem. Happened on both Firestorm viewer and SecondLife viewer. Gave up, left for 6+ months, frustrated. Yesterday, for the heck of it I was clicking around. On Windows I right-clicked on the program instead of left-clicking. I chose the option "Run as Administrator." This fixed the problem. Note that I had to right-click every time to get this to work. I set it to permanently "Run as Administrator" by right-clicking on the program from file explorer, choosing properties, clicking the Compatibility tab, then checked off "Run this program as an administratory" and OK. Hope this helps someone as frustrated as I was.