[MC-15058] Scoreboard "health" objective set to display "belowname" disconnecting player on multiplayer with end of stream

I have the exact same problem. People could connect to my server fine in updates 1.5.1 and before, but on 13w16a no one can connect! My server is run on OS X 10.8.3 with Apple Java 7. I tryed downgrading to Apple Java 6, but it didn't fix anything. I get the following messages in the server log:

2013-04-18 17:56:51 [INFO] Starting minecraft server version 13w16a
2013-04-18 17:56:51 [INFO] Loading properties
2013-04-18 17:56:51 [INFO] Default game type: SURVIVAL
2013-04-18 17:56:51 [INFO] Generating keypair
2013-04-18 17:56:52 [INFO] Starting Minecraft server on 192.168.2.35:25565
2013-04-18 17:56:52 [INFO] Preparing level "Pangaea XLV"
2013-04-18 17:56:52 [INFO] Preparing start region for level 0
2013-04-18 17:56:53 [INFO] Preparing spawn area: 80%
2013-04-18 17:56:53 [INFO] Done (1.465s)! For help, type "help" or "?"
2013-04-18 17:57:32 [SEVERE] Reached end of stream
2013-04-18 17:57:39 [INFO] Swiftykitty2K[/192.168.2.35:55043] logged in with entity id 491 at (-1902.7971640969888, 63.0, 580.3103940038204)
2013-04-18 17:57:39 [INFO] Disconnecting Swiftykitty2K [/192.168.2.35:55043]: Internal server error
2013-04-18 17:57:39 [WARNING] Failed to handle packet for Swiftykitty2K [/192.168.2.35:55043]: u: Sending packet
u: Sending packet
	at jj.b(SourceFile:443)
	at gw.a(SourceFile:122)
	at gw.a(SourceFile:77)
	at jh.d(SourceFile:161)
	at jh.c(SourceFile:53)
	at ih.a(SourceFile:44)
	at ig.b(SourceFile:29)
	at net.minecraft.server.MinecraftServer.r(SourceFile:488)
	at ib.r(SourceFile:258)
	at net.minecraft.server.MinecraftServer.q(SourceFile:405)
	at net.minecraft.server.MinecraftServer.run(SourceFile:339)
	at gr.run(SourceFile:582)
Caused by: java.lang.NullPointerException
	at fh.a(SourceFile:66)
	at ck.a(SourceFile:159)
	at jj.b(SourceFile:426)
	... 11 more
2013-04-18 17:57:39 [SEVERE] Reached end of stream
2013-04-18 17:57:41 [SEVERE] Reached end of stream
2013-04-18 17:57:53 [INFO] Swiftykitty2K[/192.168.2.35:55050] logged in with entity id 492 at (-1902.7971640969888, 63.0, 580.3103940038204)
2013-04-18 17:57:53 [INFO] Disconnecting Swiftykitty2K [/192.168.2.35:55050]: Internal server error
2013-04-18 17:57:53 [WARNING] Failed to handle packet for Swiftykitty2K [/192.168.2.35:55050]: u: Sending packet
u: Sending packet
	at jj.b(SourceFile:443)
	at gw.a(SourceFile:122)
	at gw.a(SourceFile:77)
	at jh.d(SourceFile:161)
	at jh.c(SourceFile:53)
	at ih.a(SourceFile:44)
	at ig.b(SourceFile:29)
	at net.minecraft.server.MinecraftServer.r(SourceFile:488)
	at ib.r(SourceFile:258)
	at net.minecraft.server.MinecraftServer.q(SourceFile:405)
	at net.minecraft.server.MinecraftServer.run(SourceFile:339)
	at gr.run(SourceFile:582)
Caused by: java.lang.NullPointerException
	at fh.a(SourceFile:66)
	at ck.a(SourceFile:159)
	at jj.b(SourceFile:426)
	... 11 more
2013-04-18 17:57:53 [SEVERE] Reached end of stream
2013-04-18 17:57:55 [SEVERE] Reached end of stream
2013-04-18 17:57:56 [INFO] Swiftykitty2K[/192.168.2.35:55055] logged in with entity id 493 at (-1902.7971640969888, 63.0, 580.3103940038204)
2013-04-18 17:57:56 [INFO] Disconnecting Swiftykitty2K [/192.168.2.35:55055]: Internal server error
2013-04-18 17:57:56 [WARNING] Failed to handle packet for Swiftykitty2K [/192.168.2.35:55055]: u: Sending packet
u: Sending packet
	at jj.b(SourceFile:443)
	at gw.a(SourceFile:122)
	at gw.a(SourceFile:77)
	at jh.d(SourceFile:161)
	at jh.c(SourceFile:53)
	at ih.a(SourceFile:44)
	at ig.b(SourceFile:29)
	at net.minecraft.server.MinecraftServer.r(SourceFile:488)
	at ib.r(SourceFile:258)
	at net.minecraft.server.MinecraftServer.q(SourceFile:405)
	at net.minecraft.server.MinecraftServer.run(SourceFile:339)
	at gr.run(SourceFile:582)
Caused by: java.lang.NullPointerException
	at fh.a(SourceFile:66)
	at ck.a(SourceFile:159)
	at jj.b(SourceFile:426)
	... 11 more
2013-04-18 17:57:56 [SEVERE] Reached end of stream
2013-04-18 17:57:57 [SEVERE] Reached end of stream
2013-04-18 17:58:07 [INFO] Stopping server
2013-04-18 17:58:07 [INFO] Saving players
2013-04-18 17:58:07 [INFO] Saving worlds
2013-04-18 17:58:07 [INFO] Closing listening thread
2013-04-18 17:58:07 [INFO] Saving chunks for level 'Pangaea XLV'/Overworld
2013-04-18 17:58:07 [INFO] Saving chunks for level 'Pangaea XLV'/Nether
2013-04-18 17:58:07 [INFO] Saving chunks for level 'Pangaea XLV'/The End

Swiftykitty2K 2013-04-19T15:03:12Z

Server log where NullPointerException is found.

Swiftykitty2K 2013-04-20T13:30:49Z

I have narrowed the problem somewhat. The issue creating the end of stream in located in the world folder, something with loading pre1.5.1 worlds to 13w16a. To clear this up, my server world was created in weekly snapshot 12w38b and has used every single release, both official and snapshot, since that release, if it makes any difference.

Swiftykitty2K 2013-05-02T18:49:45Z

I can confirm for 13w18b.

EDIT: I believe that the issue directly relates to the idcounts file in the resources folder. When I deleted the idcounts file in the resource folder in world, DIM1 and DIM-1 players can connect just fine.

EDIT2: This doesn't work for some people. More investigating is taking place.

Andrew Dunbard 2013-05-02T19:12:11Z

I tried to delete the idcounts file, but there was only one. Assuming you're running something other than Windows, because there isn't a resources folder. Issue persists.

10 more comments

Swiftykitty2K 2013-05-02T19:16:24Z

Derp. I meant the idcounts in the DATA folder. Back up before you attempt, but it works for me when I delete [world name]>data>idcounts, [world name]>DIM1>data>idcounts and [world name]>DIM-1>data>idcounts. Sorry.

Andrew Dunbard 2013-05-02T19:33:06Z

Hm. I actually don't have idcounts files in the DIM1 and DIM-1 folders. Odd.

Swiftykitty2K 2013-05-02T19:36:02Z

Has anyone been to the Nether or the End on your server? Just in case you didn't know, DIM1=Nether and DIM-1=End. 🙂

Andrew Dunbard 2013-05-02T19:40:09Z

Yes, we've been to the Nether extensively, but not the End. In any case, there's no idcounts file in either place.

Swiftykitty2K 2013-05-02T19:43:07Z

Odd. Well anyways, after backing up your world, try deleting the idcounts folder that you found and tell me if it fixes it! If it doesn't then I did something else that fixed it. :3

Andrew Dunbard 2013-05-02T19:59:54Z

yeah, deleting the only idcounts file I could find had no measurable effect. Same errors.

Swiftykitty2K 2013-05-02T20:01:41Z

Performing more research. I shall inform you when I figure out the problem.

Andrew Dunbard 2013-05-04T02:02:33Z

Attn Dinnerbone: Issue has NOT been resolved. Attempted to run server with new 18c server executable, still refusing connections with "End of Stream"

Tails 2013-05-04T20:41:11Z

Reopened.

Zipron Brendt 2013-05-07T07:16:10Z

Deleting the world/data/scoreboard.dat file like Chili Fries suggested worked for me also. Seems like he has located the problem.

Ed Kelly 2013-05-11T17:19:12Z

Chili Fries is correct, the issue is related to the scoreboard, in particular the health objective type. After the snapshots not working at all for me due to this issue, I removed my health objective and upgraded the server; alas, it works fine now.

Max Hadson 2013-06-01T16:54:33Z

Can also confirm it occurs when the display is set to the sidebar

Frapjump 2013-06-07T22:57:19Z

not just for Health. There's something more general.
+ ooo yay db is workin on it

lapppy 2013-06-09T22:45:59Z

Confirmed for snapshot 13w23b.

lapppy 2013-06-13T22:07:08Z

Did some quick testing, and I can confirm this is fixed in 13w24a!
Thanks Dinnerbone!