Question System Test says VB Optimise is offline?

[Vcize]

vB Optimise: Online/Offline is set to "Yes" and I've enabled everything in the Cache Settings section.

However when I choose system test, I get the following message:

vB Optimise is currently offline. Please enable and configure vB Optimise to run a system test.

---------- Post added at 16:22 ---------- Previous post was at 16:14 ----------

Ok, it looks like it's saying that because I don't have anything set under Opcache Operator.

When I try to choose one of those, they all say...

vB Optimise: You have selected a cache method that vB Optimise has detected you cannot use, this may be because the extension required is either not installed or configured correctly on your server. Please contact your system administrator or hosting provider for more information.

Is there something else I need to install for these? Which one should I use? Is there any documentation on this plugin and how to configure it? I feel like I'm just clicking random buttons...

 

[Fillip H.]

If you don't have XCache, APC or any of the other installed, please follow the instructions in the description area to use Filecache