NetBackup vCenter Web Plugin

Helo,

I need help to install the NB VC web plugin.

I have strictly folowed the following Howto : http://www.symantec.com/docs/HOWTO102931 (I tell the same thing as in the official pdf documentation)

... I used an apache web server to host the plugin package and use an Vcenter administrator account to deploy the plugin

The installation complete successfully.

But the plugin does not appear.

I guess that i missed something ...

Plz, does someone, got an idea