[Serusers] 404 not found for SUBSCRIBE

Hello all We have just installed SER_0.9.6_linux_i386 without MySQL support. We have registered two users with SER using jain-sip-applet-phone. We can make calls between them successfully. But, when we try to make one user a contact of the other, SER sends a "404 not found" for the SUBSCRIBE message. Appreciate any help in resolving this issue. Thanks and regards Amit. The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com