The city of Wilmington received word late Tuesday afternoon that the latest potential developer for a convention center hotel is being stymied from making a deal because of the slow economy. After the city requested that the John Q. Hammons Hotels and Resorts company begin negotiations for a formal agreement on the hotel, the Hammons company responded with a letter citing economicconditions and prior financial commitments as reasons for not moving forward. The convention center is set to open in November. City Council members will look at ways to move forward over the next few weeks.