I have 22 WP Blog sites installed for a Real Estate client. Dozens more coming soon. I have installed Ad Squares on all sites. I recently found a Real Estate widget we would like to use, but when installed, I must chage the permalinks to a "pretty permalink". In doing so, I have found the Ad Squares widget will only display my ads on the home page. The block is still there, but the ads are not showing on subsequent pages. Any clue what's going on here?