@AUTUMNELEGYRS It only works for the treasure chest but it could be expanded into the other ones with some work. Some of the others support a variant system (like max cape vs fire max cape) which the treasure chest doesn't have.
@boopbronze Sometimes if your client is using too much memory it will crash when it tries to create a screen. Increasing the java memory limit can help if so. The logs will tell you more.
@stevenoilersfan Oh I see. I don't think the MLM timers work like that, they are for respawns. It might be difficult to determine when the despawn timer starts for a tree.
The issues with models disappearing with this mornings update have been resolved in 1.9.15.1, restart your client to get the update. The HD plugin is temporarily disabled while it is being fixed.