Hi Benny, Thanks a lot for you help! I think I am getting very close now. Now, I can build symbian_ua_udeb.sisx in "C:\project\pjproject\build.symbian". But when I right click this file and try to install to phone, I got follow error message "Certificat error, contact your application supplier". Do you have any instructions for me about this? Should I buy I cert by myself ? Thanks again! Sen
