These problems usually occur if you are working behind a personal or corporate firewall. This type of security software prevents you from downloading executable files.
If you are seeing these type of messages, please check all security settings related to downloading executable files. These settings may be associated with your Internet Service Provider, a personal or corporate firewall or anti-virus software. If you can identify the setting that is preventing you from downloading the Toolbar, you can adjust it and then retry the installation by visiting http://bellsouthtoolbar.com/