What I expected to happen was...:
I thought the game would act normally, and I would play 1.10 on my server

What actually happened was...:
the game crashed like 10 seconds after I logged in

Steps to Reproduce:
This Process works for both Multiplayer and Singleplayer

1. Turn on Windows 8 PC
2.Open the Minecraft Launcher
3. Make sure the game is updated to 1.10
4. Click Play
5. When Game opens up Select Singleplayer or Multiplayer and select your Server or world.
6. Wait for 10 seconds to a minute

This is what the Game Output said after the Game Crashed:

Completely ignored arguments: [--nativeLauncherVersion, 301]
[15:12:28] [Client thread/INFO]: Setting user: Nathan319craft
[15:12:35] [Client thread/INFO]: LWJGL Version: 2.9.4
[15:12:37] [Client thread/INFO]: Reloading ResourceManager: Default
[15:12:40] [Sound Library Loader/INFO]: Starting up SoundSystem...
[15:12:40] [Thread-4/INFO]: Initializing LWJGL OpenAL
[15:12:40] [Thread-4/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[15:12:41] [Thread-4/INFO]: OpenAL initialized.
[15:12:41] [Sound Library Loader/INFO]: Sound engine started
[15:12:50] [Client thread/INFO]: Created: 1024x512 textures-atlas
[15:13:03] [Server thread/INFO]: Starting integrated minecraft server version 1.10
[15:13:03] [Server thread/INFO]: Generating keypair
[15:13:05] [Server thread/INFO]: Preparing start region for level 0
[15:13:06] [Server thread/INFO]: Preparing spawn area: 0%
[15:13:07] [Server thread/INFO]: Preparing spawn area: 21%
[15:13:08] [Server thread/INFO]: Preparing spawn area: 54%
[15:13:10] [Server thread/INFO]: Changing view distance to 19, from 10
[15:13:11] [Server thread/INFO]: Nathan319craft[local:E:ed05e86b] logged in with entity id 43 at (564.5382772999784, 71.0, 339.85127654715325)
[15:13:11] [Server thread/INFO]: Nathan319craft joined the game
[15:13:23] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 12436ms behind, skipping 248 tick(s)
[15:13:46] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 15187ms behind, skipping 303 tick(s)
[15:13:48] [Server thread/INFO]: Saving and pausing game...
[15:13:48] [Server thread/INFO]: Saving chunks for level 'Nathan's World'/Overworld
java.lang.IllegalArgumentException: Name and ID cannot both be blank
at com.mojang.authlib.GameProfile.<init>(GameProfile.java:25)
at ml.a(SourceFile:81)
at ml.a(SourceFile:140)
at vv.b(SourceFile:455)
at vx.b(SourceFile:228)
at baj.a(SourceFile:92)
at baj.a(SourceFile:78)
at ls.a(SourceFile:927)
at ls.a(SourceFile:879)
at net.minecraft.server.MinecraftServer.a(SourceFile:372)
at bzl.a(SourceFile:214)
at bzl.C(SourceFile:145)
at net.minecraft.server.MinecraftServer.run(SourceFile:458)
at java.lang.Thread.run(Thread.java:745)
[15:13:49] [Server thread/INFO]: Saving chunks for level 'Nathan's World'/Nether
[15:13:50] [Server thread/INFO]: Saving chunks for level 'Nathan's World'/The End
[15:13:50] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 3481ms behind, skipping 69 tick(s)
#

1. A fatal error has been detected by the Java Runtime Environment:
   #
2. EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000000001955c933, pid=10196, tid=5408
   #
3. JRE version: Java(TM) SE Runtime Environment (8.0_25-b18) (build 1.8.0_25-b18)
4. Java VM: Java HotSpot(TM) 64-Bit Server VM (25.25-b02 mixed mode windows-amd64 compressed oops)
5. Problematic frame:
6. C [ig7icd64.dll+0x6c933]
   #
7. Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
   #
8. An error report file with more information is saved as:
9. C:\Users\4nath_000\AppData\Roaming\.minecraft\hs_err_pid10196.log
   #
10. If you would like to submit a bug report, please visit:
11. http://bugreport.sun.com/bugreport/crash.jsp
12. The crash happened outside the Java Virtual Machine in native code.
13. See problematic frame for where to report the bug.
    #
    AL lib: (EE) alc_cleanup: 1 device not closed
    Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release