The problem is located @ startup script of Openfire. Just after you get a
invoke-rc.d: initscript openfire, action “start” failed.
or
invoke-rc.d: initscript openfire, action “stop” failed.
go to /etc/init.d/openfire and remove the following line
/usr/lib/jvm/java-7-openjdk-amd64 \
Then run the installation again or just start using Openfire by typing /etc/init.d/openfire start