Have you tried to restart vRO Server and vRO Control Center services (service vco-server restart and service vco-configurator restart) or the entire appliance?
What kind of installation file do you have for your plug-in? DAR file or VMOAPP file?
Note that manual plug-in installation is not officially supported; you should use either Control Center UI or Control Center REST API. But if for some reason Control Center doesn't work, you can try the following steps:
- Make a snapshot of the appliance, in case to be able to restore if something goes wrong
- Connect via SSH to the appliance and stop vRO Server / vRO Control Center services
- Copy the plug-in DAR file to /usr/lib/vco/app-server/plugins/ directory
- Change the permissions / ownership attributes of the copied file to match the other DAR files in this directory
- Start vRO Server / vRO Control Center services
The process is a bit more complex if you have your plug-in as VMOAPP file (you'll need to extract DAR file(s) from VMOAPP) or if you have a clustered vRO / vRA setup.
Again, these manual steps are not a supported way to install vRO plug-ins, especially in production environment, so I'd recommend to try to resolve the issues with Control Center.
