i see the same issue regarding the update message when using the plugin. Followed steps by Adar but looks like this bug behavior is consistent with Logic Pro X, Garageband and Mainstage.
Somehow the BBM4 is unable to recognize the 306 patch applied and goes in an update loop every time the application is started and trying to choose styles.

Regarding N/A on tracks, I saw few of them but reinstalling the related pack and rebuilding fixed it.