If you have a 32-Chunk Render Distance on MC 1.8, leave the game and start up on any MC version below 1.8 (tested on 1.7.10) your MC crashes when loading a world/Multiplayer Server because it automatically has 32 chunks selected, which doesn't exist in lower versions. Hope this helped

[19:10:22] [main/INFO]: Setting user: legobuilder0813
[19:10:22] [main/INFO]: (Session ID is token:6e3bb62d462c4b7d8e4c0e2e24ff8892:9ab3b4c471d847c99e7dadf040c53d2b)
[19:10:23] [Client thread/INFO]: LWJGL Version: 2.9.1
[19:10:23] [Client thread/INFO]: Reloading ResourceManager: Default
[19:10:24] [Sound Library Loader/INFO]: Sound engine started
[19:10:24] [Client thread/INFO]: Created: 512x256 textures/blocks-atlas
[19:10:24] [Client thread/INFO]: Created: 256x256 textures/items-atlas
[19:10:31] [Client thread/INFO]: Connecting to localhost
[19:10:33] [Client thread/FATAL]: Reported exception thrown!
s: Ticking screen
at bao.p(SourceFile:1353) ~[1.7.10.jar:?]
at bao.ak(SourceFile:774) ~[1.7.10.jar:?]
at bao.f(SourceFile:728) [1.7.10.jar:?]
at net.minecraft.client.main.Main.main(SourceFile:148) [1.7.10.jar:?]
Caused by: java.lang.IndexOutOfBoundsException
at java.nio.Buffer.checkIndex(Buffer.java:512) ~[?:1.6.0_65]
at java.nio.DirectIntBufferU.get(DirectIntBufferU.java:248) ~[?:1.6.0_65]
at bma.a(SourceFile:271) ~[1.7.10.jar:?]
at bma.a(SourceFile:220) ~[1.7.10.jar:?]
at bao.a(SourceFile:1694) ~[1.7.10.jar:?]
at bao.a(SourceFile:1652) ~[1.7.10.jar:?]
at bjb.a(SourceFile:125) ~[1.7.10.jar:?]
at hd.a(SourceFile:70) ~[1.7.10.jar:?]
at hd.a(SourceFile:13) ~[1.7.10.jar:?]
at ej.a(SourceFile:174) ~[1.7.10.jar:?]
at bcx.e(SourceFile:78) ~[1.7.10.jar:?]
at bao.p(SourceFile:1343) ~[1.7.10.jar:?]
... 3 more