If you encounter an Internet Explorer script errors when launching or using IPCheck's WinGUI, please check in the Administrator Control Panel (under Windows' START menu, in IPCheck's program group) whether the DNS entry / IP address provided under the "System" tab matches the information provided in the WinGUI login information.
Make certain to use exactly the same data provided: i.e. if using an IP address in the Administrator Control Panel, make sure that the server login parameter provided in the WinGUI is also the IP address. In case the Admin Control Panel contains a DNS entry, provide the same for the WinGUI.
Note: please also make sure to provide the port number unless using the default value of port 80.