Whenever I try to use "web update" feature I keep getting this error message pop up

"webstyle has encountered an error while communicating with the server. connecting bad url specified. Hresult = 0x800A151C please make sure you are connected to the internet"

I have unistalled and reinstalled webstyle 4, but it has made no difference.

Windows XP
browser - firefox

Thanks for any help,
Dave