Has anyone had this problem? My clean, uptodate install of Opera Portable will not run on my computer at work. No matter what flash drive I use, even if I install it to my desktop. It will not open at all, shows no signs of activity, nothing shows in processes. This applies to Opera 12.x and the newest version of Opera 25.x. Iron Portable, Qupzilla Portable, Seamonkey Portable, all run on the same computer, but not Opera. Windows 7, Dell Optiplex 9020.