Mob Spawners failing to "Saving entity NBT"

Note:

Description: Saving entity NBT
java.lang.NullPointerException
	at qw.d(SourceFile:221)
	at qw.b(SourceFile:171)
	at ml.d(SourceFile:971)
	at ml.c(SourceFile:950)

Actually THIS is a duplicate of MC-9778. Look at the date it was created "Yesterday 10:13 PM" this was created 1h and 27 mins later.

I'm having the same problem, but I'm not sure how to fix it, because I do want to spawn items using spawners. Is there a workaround for this?

It's not the items being bugged, but the spawners.
http://www.planetminecraft.com/project/working-touchscreen-with-apps-gestures-more/
If you download that map ^^ (awesome map btw) you'll see the items get spawned normally but when you fly to close to the spawners the game will crash.

As of right now the only work around to my knowledge is to downgrade snapshots (witch isn't really a work around) or to just use spawners that don't spawn multiple entities

But if a spawner spawns only one dropped item, your game crashes too.

Based on a crash report provided in this issue, I believe with high certainty that this report may be a duplicate of MC-9757. If I am wrong, please go yell at Dinnerbone.

Based on a crash report provided in this issue, I believe with high certainty that this report may be a duplicate of MC-9757. If I am wrong, please go yell at Dinnerbone.

Based on a crash report provided in this issue, I believe with high certainty that this report may be a duplicate of MC-9757. If I am wrong, please go yell at Dinnerbone.

Based on a crash report provided in this issue, I believe with high certainty that this report may be a duplicate of MC-9757. If I am wrong, please go yell at Dinnerbone.

Based on a crash report provided in this issue, I believe with high certainty that this report may be a duplicate of MC-9757. If I am wrong, please go yell at Dinnerbone.

yaaaaaaayyy http://j.mp/15MBVPY