[xwiki-users] 6.1 upgrade issue

Hi, I have upgrade our wiki to 6.1 today using war package, after start tomcat, the page shows: Xwiki is initializing (100%)... Not sure what's wrong here, no extra error log in tomcat. Help please, Hu Yang Senior Application Developer EDge Interactive | SchoolFinder Group E: hu.yang@edgeip.com<mailto:hu.yang@edgeip.com> | P: 416-494-3343 ext. 201 | F: 416-494-0949 Toll-Free in North America: 1-800-211-5577 Toll-Free in North America: 1-800-211-5577 EDge Interactive<http://www.edgeip.com>| SchoolFinder.com<http://www.schoolfinder.com> | StudyinCanada.com<http://www.studyincanada.com> | ScholarshipsCanada.com<http://www.scholarshipscanada.com/> | GradSchoolFinder.com<http://www.gradschoolfinder.com/>