There was another thread on this topic but it seems to have gone very quiet. We have stopped using Cach'eye because these maps are no longer available. It seems to be to do with Bing now requiring people to have a personal API key to access the OS tiles. Similar issues have occurred with MOBAC and Locus, but these can be fixed with XML files incorporating your personal key (which is free).

GSAK maps macro also has a fix.

We haven't tried it but we understand that Geocaching Map enhancements also has a fix - http://forums.groundspeak.com/GC/index.php?showtopic=291102&st=635

Is there a way in cach'eye to allow us to input our personal API key to access OS map tiles from Bing?

yours hopefully...

The Sweeney Toddlers x