I had r350 installed and running. I tried to update through the web interface and it just hung for a very long time during the install phase. Perhaps that broke something, perhaps not. I then logged in via ssh and performed a manual install using gdebi. After that, I could not access the web interface. I checked and found that no homegenie service existed any more. I also noticed that the directory for the homegenie installation had changed from:
/usr/local/bin/homegenie
to:
/usr/local/bin/HomeGenie
I don't know which is the cause, but when I tried to fix things by uninstalling and reinstalling, things got worse. I'm currently reimaging with r345 and will upgrade directly to r351.