Hi, the PR_END_OF_FILE_ERROR code usually indicates that your Firefox is connecting to a site through an intermediary such as a proxy server, or it could be a security/parental control filter. As a first thing to try, instruct Firefox to bypass any system-level proxy server: * Windows: "3-bar" menu button (or Tools menu) > Options * Mac: "3-bar" menu button (or Firefox menu) > Preferences * Linux: "3-bar" menu button (or Edit menu) > Preferences * Any system: type or paste '''about:preferences''' into the address bar and press Enter/Return to load it In the search box at the top of the page, type ''proxy'' and Firefox should filter to the "Settings" button, which you can click. The default of "Use system proxy settings" piggybacks on your Windows/IE "LAN" setting. "Auto-detect" can lead to a flaky connection. Change to "No proxy" and Save the change. Any difference?