I try to type in a server but the game crashes, but commands work

I was going to ask if crashing was a normal thing in chat but, ironically the game crashed when i did. here's the crash report

---- Minecraft 
Crash Report ----
// Uh... Did I do that?

Time: 7/4/13 7:20 PM
Description: Deserializing Message

java.lang.ClassCastException: com.google.gson.JsonPrimitive cannot be cast to com.google.gson.JsonObject
	at cw.a(SourceFile:14)
	at cw.deserialize(SourceFile:10)
	at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:58)
	at com.google.gson.Gson.fromJson(Gson.java:795)
	at com.google.gson.Gson.fromJson(Gson.java:761)
	at com.google.gson.Gson.fromJson(Gson.java:710)
	at com.google.gson.Gson.fromJson(Gson.java:682)
	at cu.c(SourceFile:220)
	at bcn.a(SourceFile:518)
	at dl.a(SourceFile:49)
	at cn.b(SourceFile:350)
	at bcn.d(SourceFile:95)
	at bcu.b(SourceFile:60)
	at atn.k(SourceFile:1380)
	at atn.S(SourceFile:662)
	at atn.d(SourceFile:618)
	at net.minecraft.client.main.Main.main(SourceFile:101)


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

-- Head --
Stacktrace:
	at cw.a(SourceFile:14)
	at cw.deserialize(SourceFile:10)
	at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:58)
	at com.google.gson.Gson.fromJson(Gson.java:795)
	at com.google.gson.Gson.fromJson(Gson.java:761)
	at com.google.gson.Gson.fromJson(Gson.java:710)
	at com.google.gson.Gson.fromJson(Gson.java:682)

-- Serialized Message --
Details:
	JSON string: Cannot send chat message.
Stacktrace:
	at cu.c(SourceFile:220)
	at bcn.a(SourceFile:518)
	at dl.a(SourceFile:49)
	at cn.b(SourceFile:350)
	at bcn.d(SourceFile:95)

-- Affected level --
Details:
	Level name: MpServer
	All players: 2 total; [bcx['Darkpassenger995'/76067416, l='MpServer', x=-1274.67, y=77.62, z=-2551.04], ben['geracetj'/73084326, l='MpServer', x=-1301.59, y=76.00, z=-2579.22]]
	Chunk stats: MultiplayerChunkCache: 81
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-1318,109,-2365), Chunk: (at 10,6,3 in -83,-148; contains blocks -1328,0,-2368 to -1313,255,-2353), Region: (-3,-5; contains chunks -96,-160 to -65,-129, blocks -1536,0,-2560 to -1025,255,-2049)
	Level time: 337191666 game time, 337290055 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: survival (ID 0). Hardcore: false. Cheats: false
	Forced entities: 11 total; [ben['geracetj'/73084326, l='MpServer', x=-1301.59, y=76.00, z=-2579.22], oi['Painting'/76073656, l='MpServer', x=-1302.06, y=84.50, z=-2511.00], oi['Painting'/76073649, l='MpServer', x=-1303.00, y=79.50, z=-2509.94], oi['Painting'/76073652, l='MpServer', x=-1300.94, y=84.50, z=-2511.00], oi['Painting'/76073650, l='MpServer', x=-1304.00, y=79.50, z=-2506.06], oi['Painting'/76073651, l='MpServer', x=-1300.94, y=84.50, z=-2508.00], rn['Chicken'/-2147483341, l='MpServer', x=3129.28, y=68.44, z=-1146.00], bcx['Darkpassenger995'/76067416, l='MpServer', x=-1274.67, y=77.62, z=-2551.04], tc['Creeper'/-2147483342, l='MpServer', x=1513.44, y=73.79, z=989.01], oi['Painting'/76073657, l='MpServer', x=-1305.94, y=84.50, z=-2511.00], ben['geracetj'/73084326, l='MpServer', x=-1301.59, y=76.00, z=-2579.22]]
	Retry entities: 0 total; []
Stacktrace:
	at bcu.a(SourceFile:284)
	at atn.k(SourceFile:1387)
	at atn.S(SourceFile:662)
	at atn.d(SourceFile:618)
	at net.minecraft.client.main.Main.main(SourceFile:101)

-- Affected level --
Details:
	Level name: MpServer
	All players: 2 total; [bcx['Darkpassenger995'/76067416, l='MpServer', x=-1274.67, y=77.62, z=-2551.04], ben['geracetj'/73084326, l='MpServer', x=-1301.59, y=76.00, z=-2579.22]]
	Chunk stats: MultiplayerChunkCache: 81
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-1318,109,-2365), Chunk: (at 10,6,3 in -83,-148; contains blocks -1328,0,-2368 to -1313,255,-2353), Region: (-3,-5; contains chunks -96,-160 to -65,-129, blocks -1536,0,-2560 to -1025,255,-2049)
	Level time: 337191666 game time, 337290055 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: survival (ID 0). Hardcore: false. Cheats: false
	Forced entities: 11 total; [ben['geracetj'/73084326, l='MpServer', x=-1301.59, y=76.00, z=-2579.22], oi['Painting'/76073656, l='MpServer', x=-1302.06, y=84.50, z=-2511.00], oi['Painting'/76073649, l='MpServer', x=-1303.00, y=79.50, z=-2509.94], oi['Painting'/76073652, l='MpServer', x=-1300.94, y=84.50, z=-2511.00], oi['Painting'/76073650, l='MpServer', x=-1304.00, y=79.50, z=-2506.06], oi['Painting'/76073651, l='MpServer', x=-1300.94, y=84.50, z=-2508.00], rn['Chicken'/-2147483341, l='MpServer', x=3129.28, y=68.44, z=-1146.00], bcx['Darkpassenger995'/76067416, l='MpServer', x=-1274.67, y=77.62, z=-2551.04], tc['Creeper'/-2147483342, l='MpServer', x=1513.44, y=73.79, z=989.01], oi['Painting'/76073657, l='MpServer', x=-1305.94, y=84.50, z=-2511.00], ben['geracetj'/73084326, l='MpServer', x=-1301.59, y=76.00, z=-2579.22]]
	Retry entities: 0 total; []

-- System Details --
Details:
	Minecraft Version: 1.6.1
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 195059288 bytes (186 MB) / 493486080 bytes (470 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 9638 (539728 bytes; 0 MB) allocated, 40 (2240 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	Launched Version: 1.6.1
	LWJGL: 2.9.0
	OpenGL: Intel(R) HD Graphics 4000 GL version 4.0.0 - Build 9.17.10.2932, Intel
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Pack: Default
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 294 (16464 bytes; 0 MB) allocated, 18 (1008 bytes; 0 MB) used