Is there a difference in behavior from running a query in access with one parameter and running that same query as a stored procedure using ASP? Specifically, I have a query that performs well running it through access. When I try to run that same query using ASP, I get the HTTP: 500 Internal Error message. This same ASP page runs any one of 5 stored procedures depending on a querystring value. All the other stored procedures execute as expected. Any ideas?