AAX only available as multimono instrument

In my Juce plugin, the AAX build is only available as a multimono instrument in Pro Tools. I'm at a loss to why it can't be loaded as a multichannel instrument.

Has anyone else encountered a similar problem?

Thanks

OS X 10.10 / Pro Tools 11.2.1

 

 

** Edit: Fixed. For anyone with a similar problem, have a look at JucePlugin_PreferredChannelConfigurations **