I've tried installing Opera 9.02 and 8.54 that are for USB. Installing is no problem. Works fine. But once I quit PortableApps and disconnect the thumb drive, when I go back later to start Opera, I always get an error that I'm missing a certain file. But if I go to the root directory for Opera, it runs fine. But just not from the PortableApps menu. Freshing the menu does no good. Any suggestions?