I receive the message "Error: Failed to register" at the end of attempting to reinstall Adobe Flash Player 11.5.502.135 (after a complete uninstall of all Adobe programs) on my older machine running Windows XP and the older browser IE 7. I have tried the offline download installer and my Google Chrome browser setting is "allow all sites to run Java". I allowed the program to run from my AVG firewall dialog box. Windows firewall did not ask. I am logged in as administrator. What should I do because some programs prompt me for this install in order for some functions to work correctly.