To day I tried to update my App volumes servers from 2.13 to 2.18 and I when I opened it in a browser I got an error Unable to start App Volumes Undefined method : '#'
So I need to update from 2.13 to 2.16 first, then 2.16 to 2.18.
I will also have to uninstall the one I upgraded first and reinstall 2.18...
Why you do this VMware? Why?
After I upgraded another server via 2.16. I started the service on the first one, just in case before uninstalling/reinstalling, and now it works.
=> Who knows what's going on.