This usually happens if ACS can't get access to the new system vm templates. What does the management log say? Without much details from your side it is hard to help unfortunately,
Andrei ----- Original Message ----- From: "stevenliang" <stevenli...@yesup.com> To: users@cloudstack.apache.org Sent: Wednesday, 26 March, 2014 2:02:15 PM Subject: vrouters cannot start after upgrade from 4.2.1 to 4.3 Hi, After upgraded from 4.2.1 to 4.3, my vrouters cannot start. Please help. Steven