WebPlus X5: Google maps script error after upgrade from X4

Hi

I have just upgraded to X5 from X4. Now, when the site loads in WP I get lots of script errors as it tries to load the google maps. If I then try to edit a map again, there is a script error and the map does not display.

Any ideas?

XP SP3. Have checked and Webplus is a firewall exception.

Thanks,

Roger