month until the error is corrected either by D2 or LICENSEE. 6.4 Support. D2 will provide the following support to LICENSEE throughout the Warranty period and for those subsequent years for which support has been purchased by Licensee: (i) D2 will assist LICENSEE in determining if problems encountered by LICENSEE are caused by programming errors in the Licensed Technology. Software License D2 Technologies, Inc. and Maintenance Agreement August 4, 1997 CONFIDENTIAL 8 (ii) D2 will answer questions concerning the installation of Licensed Technology. (iii) D2 will assist LICENSEE in resolving LICENSEE's problems, if any, arising from the normal usage of the Licensed Technology. (iv) D2 shall appoint a qualified technical staff as the "Technical Contact" to co-ordinate all support and maintenance services. The "Technical Contact" shall be available to LICENSEE during D2's normal business hours; in the event that appointed "Technical Contact" is not available, a back-up "Technical Contact" shall be temporarily assigned and LICENSEE shall be notified. 6.5 Notification and Cooperation by LICENSEE. To obtain support from D2 under this Article 6, LICENSEE shall provide D2 with written notice which will contain a description of the problem for which LICENSEE is seeking support. D2 shall have no obligation to correct problems which are due to modifications to Licensed Technology performed by LICENSEE; provided, that if D2 agrees to correct such problems it shall charge its then current time and materials rates, which shall be payable by LICENSEE within thirty days after invoicing by D2. LICENSEE agrees to provide D2 with access to LICENSEE's equipment and computer systems on a temporary basis and as needed to allow D2 to reproduce, correct and verify the correction of the problem reported by LICENSEE or otherwise identified by D2. 7. LIMITED SOURCE CODE LICENSE AND PROTECTION 7.1 Source Code delivery. D2 shall, after