Install the host agent first. Then install OSSV. When OSSV is installed, it will register itself with the Host Agent software if it exists. Because you installed OSSV first, it never got registered with the Host Agent software because it did not exist.
As far as I can tell, the checkbox is worthless. You can't progress past the screen without it checked and it throws an error.
I have the same issue as others above. I have deployed the NetApp Host Agent 2.7 (and confirmed it's running it's local web server) and the OSSV agent onto RHEL 6 and no matter what I do I get the error "The host agent must have the ossv plugin installed in order to remotely start or stop the ossv service."
I can set up OSSV relationships via the agent and filer command line but can not seem to create a new on in DFM. Any help would be greatly apprecaited.