Minecraft new launcher Runtime Error

nativelog.txt

Set run directory to M:\Minecraft
Native Launcher Version: 642-dev
Operating System: Windows 10 Home
Application Hash: 242578f067795d57ed0c884acd030abcfe91dc76
Application Data directory: C:\Users\Tom\AppData\Roaming/.minecraft
Executable Path: Minecraft_staging.exe
App Directory dir: M:\Minecraft
Start dir: C:/Users/Tom/AppData/Roaming/.minecraft
Launcher dir: M:/Minecraft/game
TmpDir dir: C:/Users/Tom/AppData/Roaming/.minecraft/tmp
Java Version: 
x64: 1
LauncherConfiguration from: http://launchermeta.mojang.com/mc-staging/launcher.json
Downloaded config
Native launcher is current
Native launcher is current
We need to update the java runtime!
Java version: "1.8.0_51"
Current Java version: ""
Update Java Version
Runtime outdated!
Runtime version should be should be 1.8.0_51
We need to extract the launcher library, it doesn't exist!
Game launcher outdated!
Check to see if we can run the launcher
Native launcher is current
Installing java
Unpack C:/Users/Tom/AppData/Roaming/.minecraft/tmp//_tmpJava.lzma to C:/Users/Tom/AppData/Roaming/.minecraft/tmp//_tmpJava.zip
Unpack successful
Unpack C:/Users/Tom/AppData/Roaming/.minecraft/tmp//_tmpJava.zip to ./runtime/jre-x64/1.8.0_51_tmp
Unpack successful
Java bin dir: ./runtime/jre-x64/1.8.0_51/bin
Installing java launcher
Unpacking launcher
Unpack C:/Users/Tom/AppData/Roaming/.minecraft/tmp/launcher.zip.lzma to C:/Users/Tom/AppData/Roaming/.minecraft/tmp/launcher.zip
Unpack successful
Unpack C:/Users/Tom/AppData/Roaming/.minecraft/tmp/launcher.zip to C:/Users/Tom/AppData/Roaming/.minecraft/tmp/launcher_extracted
Unpack successful
Couldn't remove old launcher: 
Couldn't move launcher: Access is denied.

Starting launcher.dll with M:\Minecraft\runtime\jre-x64\1.8.0_51\bin\javaw.exe
Failed to set run directory to M:\Minecraft\game
Couldn't load library: 126