From what I can see from this report, Item frames have some problems rendering and cause a crash.
Description: Rendering entity in world
java.lang.NullPointerException: Rendering entity in world
at cce.a(SourceFile:79)
at cce.a(SourceFile:53)
at cce.a(SourceFile:24)
at cbt.a(SourceFile:219)
at cbt.a(SourceFile:199)
at cbt.a(SourceFile:176)
at bxs.a(SourceFile:495)
at bxl.a(SourceFile:1146)
at bxl.b(SourceFile:937)
at bjf.ai(SourceFile:828)
at bjf.f(SourceFile:755)
at net.minecraft.client.main.Main.main(SourceFile:121)
Crash report attached.
Attachments
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Can confirm, it crashed upon me moving my player
Confirm. It crashed upon opening my creative world. The crash report showed the error with the rendering of item frames.
Confirmed. I'm locked out of a few of my worlds.
(Edit: I also tested an item frame in a new world, and the game crashed again.)
i confirm that this heapens cant join one of my worlds caus items frames are al over the place
Can confirm, happened when joining my snapshot testing world (creative). It has item frames in it.

Confirmed.
Item frames cause this.
The same god dang thing happened to me too! I just placed an ItemFrame in my world and it suddenly crashed!
100% Confirmed
Confirmed
Confirmed
confirmed
Confirmed. Literally every single one of my worlds aren't usable.
Confirmed.
Item renders fine in inventory, on hotbar and as dropped item, but placing it on a block whilst looking crashes the game.
Happens for pre-placed item frames as well as ones put down in new worlds.
Crash report gives: java.lang.NullPointerException: Rendering entity in world, and lower down gives Entity Type: ItemFrame
Confirmed. I see the game for a split second and then it crashes and blames item frames.
Confirmed. I can't play on any of my worlds. Crashes all the time.
I also got that when I tried to place one on my own server, can't join again π
I can confirm this, I really hope this will be fixed before the weekend, I really want to have fun with the new features this weekend.
Edit : I fixed the issue by removing the item frames for now we didn't use a lot of them in our current world so I don't think they will be missed till they fix this issue, I went back to 14w11b on my world and removed all of the item frames, then switched the server back to the new 14w18a and have no problems to report beside a lot of light bugs on the stairs and half slabs.
If someone want a tip: try to look away quickly of the item frames when loading world/loging in before they try to load and then remove them with a /setblock or /fill command.

Confirmed, I hope Mojang gets this fixed quickly.
The easiest way to get rid of Item Frames would be to use "/kill @e[type=ItemFrame]" or just delete them with McEdit.

For everyone who's using 14w18a the only way to fix this without removing the item frame(s) is to downgrade your version back to 14w17a, since this version didn't add any new blocks it won't corrupt your world.
Confirmed
Confirmed though the /kill command above can be used to fix it "The easiest way to get rid of Item Frames would be to use '/kill @e[type=ItemFrame]'"
I read the crash report and i wanted to see if item frames really were to blame. instead of a new world i just used my single player world and as expected minecraft crashed, except now i can't load that world anymore i tried downgrading as well, but it doesn't even show in the world list, anyone know how to fix this, if it can be fixed at all? Thanks.
Tested and Confirmed.
I had to downgrade one of my worlds because the game crashed if I got too close to the centre of the map due to the fact that there were 2 item frames hanging on the wall.
I crash on log-in. I am in an area with many item frames. I downgraded to 14w17a and all was well again.
confirmed
I can't move in my world
Yup, can confirm. Game crashes upon loading a world with item frames.
Confirmed
Confirmed.
Confirmed, i had to go in MCedit to remove it
Obviously confirmed.
sorry I duplicated it π
Confirmed, but till then, can't you just /kill @e[type=ItemFrame] ?
if you downgrade to 14w17b the game works perfectly.
14w17b?
Go to 14w17b and do /kill @e[type=ItemFrame]
There is no 14w17b. There is 14w17a.
This happened to me I hope they fix it soon D:
also mine is a duplicate
Can confirm as well. This really needs to be fixed.
Same thing is happening to our smp server. Lucky one of our players was far away from any item frame so we quickly teleported to his location and can play. However as soon as we get close to a chunk that contains an item frame, CRASH! We are just staying away from item frames until a fix comes along.
confirmed item frames crashing on mine 14w18a
Confirmed for me as well D:
Confirmed
same issue, latest snapshot, creative mode. as soon as item frame is place on a block it crashes client (which then gave me a teddy bear, thank you for that) and trying to load it up again is useless as the world crashes on load now. Have to create a new world. Using Windows 8.1 64bit (java 64bit) running total of 16gb of mem (4gb allocated to java for minecraft) Having item frame in inventory and hold one in hand doesn't seem to cause problems, the crash occurs immediately as the item frame is places on a solid block.

For everyone using 14w18a you should downgrade back to 14w17a until this is resolved, this is especially important for Servers as it can affect many players. also using /kill command to destroy the Item Frames isn't a good idea either.
NOTE: downgrading will not corrupt your world.
@ChaofanJ, you DON'T need to downgrade. Just DON'T place item frames!
37 votes, 40 odd duplicate issues and it's still marked unconfirmed and unassigned...
The first of may is a holiday in Sweden. The people working at Mojang are enjoying some time off. That's also why the snapshot was released one day in advance, on wednesday, April 30th. This bug will hopefully get fixed on friday.
Until then, downgrading seems like the best option.
@Blah: This bug is not about placing item frames. It's about rendering item frames in the world. So this also affects users with existing worlds with item frames in them. As soon as the world loads it crashes the game. The only way to play such worlds, is to downgrade.
Same problem
Here is a vague but temporary solution for those who really don't mind having item frames removed from the game until there is a proper bug fix.
This is going to remove Item Frames from your 14w18a jar file, so if you'd rather not remove ItemFrames from this version (even though it crashes minecraft if you place them) then do not proceed and wait for Mojang to release fix, or modify the code yourself.
If you do not mind removing ItemFrames from the game to be able to play on 14w18a on a map that does render the ItemFrame entity;
Simply replace the current snapshot version (14w18a) in /versions/ in the minecraft folder with 14w18a-custom
This custom version does not contain cce.class, which is needed to render the ItemFrame entity.
PS: Don't worry, this does not remove any ItemFrames in your Minecraft Map, but instead it will simply not render them.
Remember that this does not resolve the issue, but is useful incase you want to play on your Map and are experiencing this issue
I have the same problem too
It seems that signs can cause this error to occur, too. I was able to move my character to the nether where I had no item frames, but when I looked at a sign, the game crashed.
My Minecraft 14w18a crashes when logging into a world with item frames or when an item frame is placed as well. (Submitted crash report to Mojang through the launcher)
I draw a premature conclusion that this "Fix Version: Future version (1.8 ?)" means 1.8 will be released this week. π
@unknown: No, that actually just means that it will be fixed in the next 1.8 snapshot.
duh i have the same problem and i can't get inside my map again! how'd this happen??? I LOST EVERYTHING IN MY MAPS! D:
update to 14w18b
Thank you Dinnerbone
@Blah the crash report in MC-54405 says that the crash occured in 14w18a not 14w18b.
it says to back up worlds before using snapshot... now you know... know you should
This issue is happening on CU31 now. I can't find an updated thread so I am putting this here. If I missed it I apologize. Everytime I try to place an item frame the game freezes. I am on XBOX 360. Thanks.
Console bugs go here: https://bugs.mojang.com/browse/MCCE

@unknown, if you search for item frame bugs within the console edition bug tracker, and you really can't find your issue, it's best to create a new issue for the console edition, rather than post an update to a PC edition issue. They are two different trackers because they are two different games, with two different sets of developers that read these issues.
Reporting for my kid. Thanks for the help I will go to the link above.
I can confirm this, it happens in single player and multiplayer.