Error reloading the plugin when using data in config

[Duzbee]

OtherDrops version: 2.8b.596 for 1.8.1

Description: The plugin works ok when I don't use data after a block ID, but when I add an ID with "@" in the config the plugin don't work. It also give me an error when I reload the plugin.

Config:

otherdrops: 95@2: - drop: GLASS

    - drop: MONEY
      quantity: 3-15
      message: You recycled the glass for %q dollars.

It works when I remove "@", but when I use it I get this error: https://gyazo.com/ef4950b14f79cbd12f7ee35deeaa917b