[MC-64490] Unable to set beacon effects

In snapshot 14w31a beacon effects can't be applied.
Relevant console output attached.

Related issues

migrated 2014-07-30T18:32:34Z

[media]

migrated 2014-07-30T19:52:17Z

Confirmed for 14w31a

migrated 2014-07-31T00:28:30Z

Same Here

migrated 2014-07-31T08:17:42Z

Yep. This is annoying...

migrated 2014-07-31T22:09:38Z

Confirmed

qmagnet 2014-08-01T00:41:45Z

Confirmed

migrated 2014-08-02T19:57:59Z

Confirmed, can't use my shiny new beacon in my new world :S

migrated 2014-08-03T01:49:46Z

Confirmed, was testing beacons below spawners to see if they'd still radiate effects. Couldn't get it to accept my emerald or diamond.

migrated 2014-08-03T22:43:52Z

Confirmed. Why does it say resolved? My Beacons are giving off light, but wont give any effects.

migrated 2014-08-03T22:44:36Z

Its resolved because its a dupe.

migrated 2014-08-03T22:49:45Z

Oh, okay I see it. I'm pretty new here.