Flat land has black on the sky

Please force a crash by holding down F3+C or FN+F3+C for 10 seconds while in-game and attach the crash report here.

You're in water, Minecart or below an overhang.

Crash report for Sonic

Minecraft Crash Report ----
// Don't be sad, have a hug! <3

Time: 2/24/15 4:40 PM
Description: Manually triggered debug crash

java.lang.Throwable
at avf.s(SourceFile:1587)
at avf.av(SourceFile:888)
at avf.a(SourceFile:325)
at net.minecraft.client.main.Main.main(SourceFile:124)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

– Head –
Stacktrace:
at bdc.a(SourceFile:309)

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [bex['The_GOOSTER'/238, l='MpServer', x=-243.16, y=4.00, z=126.25]]
Chunk stats: MultiplayerChunkCache: 625, 625
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: -291.00,4.00,215.00 - World: (-291,4,215), Chunk: (at 13,0,7 in -19,13; contains blocks -304,0,208 to -289,255,223), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 623661 game time, 8897 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 89 total; [tu['Pig'/11, l='MpServer', x=-297.09, y=4.00, z=48.06], wj['Villager'/133, l='MpServer', x=-238.25, y=4.00, z=49.50], tu['Pig'/12, l='MpServer', x=-300.75, y=4.00, z=84.06], to['Chicken'/14, l='MpServer', x=-286.63, y=4.00, z=80.56], tl['Bat'/371098, l='MpServer', x=-223.88, y=39.16, z=186.74], va['item.item.egg'/15, l='MpServer', x=-293.91, y=4.00, z=99.59], wj['Villager'/152, l='MpServer', x=-238.72, y=5.00, z=54.28], tp['Cow'/17, l='MpServer', x=-295.81, y=4.00, z=119.13], wj['Villager'/153, l='MpServer', x=-241.25, y=4.00, z=59.09], to['Chicken'/16, l='MpServer', x=-294.44, y=4.00, z=100.28], wj['Villager'/154, l='MpServer', x=-226.66, y=5.00, z=53.97], va['item.item.egg'/19, l='MpServer', x=-301.09, y=4.00, z=114.31], wj['Villager'/155, l='MpServer', x=-237.94, y=5.00, z=54.28], to['Chicken'/18, l='MpServer', x=-301.31, y=4.00, z=113.41], wj['Villager'/156, l='MpServer', x=-241.44, y=4.00, z=51.69], wj['Villager'/157, l='MpServer', x=-238.72, y=5.00, z=55.97], wj['Villager'/158, l='MpServer', x=-235.72, y=4.00, z=58.28], wj['Villager'/145, l='MpServer', x=-238.69, y=5.00, z=57.56], wj['Villager'/146, l='MpServer', x=-237.31, y=5.00, z=55.13], wj['Villager'/26, l='MpServer', x=-275.50, y=4.00, z=47.84], wj['Villager'/147, l='MpServer', x=-238.13, y=5.00, z=56.69], wj['Villager'/148, l='MpServer', x=-232.31, y=4.00, z=66.28], wj['Villager'/149, l='MpServer', x=-238.15, y=5.00, z=55.22], wj['Villager'/150, l='MpServer', x=-234.44, y=4.00, z=60.25], wj['Villager'/151, l='MpServer', x=-237.31, y=5.00, z=56.06], tu['Pig'/34, l='MpServer', x=-272.56, y=2.00, z=182.53], wj['Villager'/32, l='MpServer', x=-284.28, y=4.00, z=48.38], wj['Villager'/33, l='MpServer', x=-276.31, y=4.00, z=158.53], tl['Bat'/452638, l='MpServer', x=-229.91, y=41.47, z=187.59], wj['Villager'/163, l='MpServer', x=-235.34, y=5.00, z=60.91], wj['Villager'/162, l='MpServer', x=-230.69, y=5.00, z=56.72], wj['Villager'/161, l='MpServer', x=-239.34, y=5.00, z=61.28], wj['Villager'/160, l='MpServer', x=-236.69, y=4.00, z=58.81], tp['Cow'/165, l='MpServer', x=-224.46, y=4.00, z=150.44], wj['Villager'/164, l='MpServer', x=-228.72, y=4.07, z=55.47], va['item.item.egg'/186, l='MpServer', x=-212.69, y=4.00, z=100.16], tl['Bat'/187, l='MpServer', x=-222.25, y=21.10, z=185.47], tl['Bat'/537617, l='MpServer', x=-224.63, y=40.16, z=195.75], wj['Villager'/184, l='MpServer', x=-206.75, y=5.00, z=50.66], wj['Villager'/48, l='MpServer', x=-256.41, y=4.00, z=47.91], to['Chicken'/185, l='MpServer', x=-216.63, y=4.00, z=101.75], tp['Cow'/190, l='MpServer', x=-204.22, y=4.00, z=84.78], tu['Pig'/55, l='MpServer', x=-266.56, y=1.00, z=177.44], tu['Pig'/54, l='MpServer', x=-256.16, y=2.00, z=162.50], tp['Cow'/191, l='MpServer', x=-199.72, y=4.00, z=118.22], wj['Villager'/53, l='MpServer', x=-265.41, y=4.00, z=134.13], tp['Cow'/189, l='MpServer', x=-194.94, y=4.00, z=60.00], tu['Pig'/59, l='MpServer', x=-270.41, y=1.00, z=180.22], tl['Bat'/466350, l='MpServer', x=-258.78, y=10.22, z=191.84], wj['Villager'/179, l='MpServer', x=-226.22, y=5.00, z=53.03], tu['Pig'/58, l='MpServer', x=-271.56, y=1.13, z=186.66], tu['Pig'/57, l='MpServer', x=-270.56, y=1.00, z=183.44], wj['Villager'/177, l='MpServer', x=-227.22, y=5.00, z=51.25], tu['Pig'/56, l='MpServer', x=-264.97, y=2.00, z=179.38], tu['Pig'/63, l='MpServer', x=-268.16, y=1.00, z=182.44], tu['Pig'/62, l='MpServer', x=-270.47, y=1.13, z=187.00], tu['Pig'/61, l='MpServer', x=-271.56, y=1.00, z=181.53], tu['Pig'/60, l='MpServer', x=-271.56, y=1.00, z=188.53], tu['Pig'/68, l='MpServer', x=-270.47, y=1.13, z=185.72], tu['Pig'/69, l='MpServer', x=-265.47, y=1.00, z=177.44], tu['Pig'/70, l='MpServer', x=-270.47, y=1.00, z=184.56], tu['Pig'/64, l='MpServer', x=-271.56, y=1.00, z=185.44], tu['Pig'/65, l='MpServer', x=-270.53, y=1.13, z=178.44], tu['Pig'/66, l='MpServer', x=-270.25, y=1.13, z=181.50], tu['Pig'/67, l='MpServer', x=-270.47, y=1.00, z=188.31], tu['Pig'/196, l='MpServer', x=-167.81, y=4.00, z=180.88], tp['Cow'/193, l='MpServer', x=-188.31, y=4.00, z=51.22], tu['Pig'/192, l='MpServer', x=-196.00, y=4.00, z=126.97], tu['Pig'/195, l='MpServer', x=-168.09, y=4.00, z=170.09], tp['Cow'/194, l='MpServer', x=-193.88, y=4.00, z=86.06], tl['Bat'/470196, l='MpServer', x=-255.84, y=9.06, z=196.75], wj['Villager'/102, l='MpServer', x=-248.44, y=4.00, z=58.41], bex['The_GOOSTER'/238, l='MpServer', x=-243.16, y=4.00, z=126.25], wj['Villager'/103, l='MpServer', x=-248.31, y=4.00, z=63.84], wj['Villager'/110, l='MpServer', x=-249.25, y=4.00, z=55.72], wj['Villager'/111, l='MpServer', x=-249.72, y=4.00, z=70.44], wj['Villager'/108, l='MpServer', x=-245.41, y=4.00, z=50.78], wj['Villager'/109, l='MpServer', x=-253.22, y=4.00, z=63.31], wj['Villager'/106, l='MpServer', x=-240.78, y=4.00, z=57.53], wj['Villager'/107, l='MpServer', x=-246.72, y=5.00, z=63.97], wj['Villager'/104, l='MpServer', x=-245.31, y=5.00, z=62.28], wj['Villager'/105, l='MpServer', x=-240.31, y=4.00, z=60.09], va['item.item.egg'/282883, l='MpServer', x=-286.00, y=4.00, z=79.75], tu['Pig'/117, l='MpServer', x=-251.38, y=2.00, z=181.44], va['item.item.beefRaw'/116, l='MpServer', x=-254.13, y=1.00, z=165.81], va['item.item.beefRaw'/115, l='MpServer', x=-250.00, y=2.00, z=155.16], va['item.item.beefRaw'/114, l='MpServer', x=-249.19, y=2.00, z=155.25], va['item.item.leather'/113, l='MpServer', x=-249.16, y=2.00, z=155.50], tp['Cow'/112, l='MpServer', x=-241.56, y=1.00, z=152.44]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at bdc.a(SourceFile:309)
at avf.b(SourceFile:2296)
at avf.a(SourceFile:334)
at net.minecraft.client.main.Main.main(SourceFile:124)

– System Details –
Details:
Minecraft Version: 1.8.3
Operating System: Mac OS X (x86_64) version 10.9.5
CPU: 2x Intel(R) Core(TM)2 Extreme CPU X7900 @ 2.80GHz
Java Version: 1.6.0_65, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 197283872 bytes (188 MB) / 337129472 bytes (321 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 5 total; -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 1, tcache: 0, allocated: 13, tallocated: 95
Launched Version: 1.8.3
LWJGL: 2.9.2
OpenGL: ATI Radeon HD 2600 PRO OpenGL Engine GL version 2.1 ATI-8.24.16, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because ARB_framebuffer_object is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: No
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)

plus Kumasasa I'm not in water or minecart

Please attach a screenshot with debug screen (F3) enabled.