First, thank you for this plugin. My users all love it. I've run into two issues though. I have MagicWorlds-1.4 and Magic-6.3 loaded with just the default settings. I'm running in survival mode on Spigot 1.11. I do run several other plugins, but I've tried with just these two also. I've tried as OP and as a normal user. The results are the same. If you need any additional info, I'll do the best I can. Any help would be appreciated. Thank you.

First - When trying to cast the spell Gather:

I get the following console message in debugging:
[18:43:48 INFO]: Cast Gather from -222,68,234: cast (true)

The user gets the message:
Unknown command. Type "/help" for help.

The particle effects take place, but the nothing else happens.

Second - I've found dozens of chests near spawners, in mines, and in strongholds. I haven't had a single message about items in chests nor have I found a single magic item. With the same config on my 1.9 server I had messages and items all of the time. When I upgraded to 1.10 they stopped. 1.11 is the same, I haven't had a single message.

Gather relies on there being some plugin available to handle the /tpa command.

MagicWorlds only puts items in newly generated chests- do you know if you have new chunks being generated, or was the world mostly populated before you added the plugin?

I added a teleport plugin and it worked great! Thanks for the help.

For the servers, I made a brand new world with both 1.10 and with 1.11. Also created a new server with just the Magic worlds and Magic plugins, on the same seed I'm using so I could go straight to known chests. They were all there, no magic items though.

Oh.. hm so .. sorry about this, I forgot that I made the chest populator optional at some point.

If you drop this file into the MagicWorlds plugin folder it will enable the chest populator- and you can configure it how you like from there:

https://github.com/elBukkit/MagicWorlds/blob/master/src/main/resources/examples/mixins/chest_populators.yml

The command "/magicw populate" can be used to populate existing chests in the world, make sure to only run this once or items will double up.

The YML works as did the command. Thanks for the help again. Will that be included in the next update of the plugin?

I think I intentionally took it out for .. reasons. MagicWorlds can do a lot of things now, and I was thinking people might not want to install it and automatically have the chest populator. So I made all the configs optional - I probably just need to write some better documentation or something. Honestly I didn't know anyone was really using it anymore :)