I did as you suggested and found the culprit. I have Wishlist Member installed on my site – and one of the plug-ins I purchased from them called Wishlist ID was causing the problem. When I turned Wishlist ID off, the extra text went away.
Do you know if there is a way of making the two work together? Is it something that needs to be configured on WP-Table Reloaded or is it something that needs to be reconfigured in Wishlist ID?
Thanks for your help,
Andrea