Hi andrews, thanks for the screen-shot .
I'm not sure of what's happening it seems something wrong with the SQL query that draws the table... I've corrected the query, maybe you're using a table prefix and my query was the problem, try the last version of the uc_global_quote_admin.inc. Download the new one from this url -> https://raw.github.com/joanpc/uc_global_quote/master/uc_global_quote_adm...
I will release a full package if this fix your problem.
If this doesn't work, try using the garland theme and tell me more about your setup, Drupal and Ubercart versions and if your MySQL or PSQL version.