when i start fml 1.7.2-10.12.2.1147 my launcher crashes and says:

Launching game

Looking for old natives to clean up...

Deleting C:\Users\Mark\AppData\Roaming\.minecraft\versions\1.7.2\1.7.2-natives-24684031074493

Unpacking natives to C:\Users\Mark\AppData\Roaming\.minecraft\versions\1.7.2-Forge10.12.2.1147\1.7.2-Forge10.12.2.1147-natives-38438432743447

Reconstructing virtual assets folder at C:\Users\Mark\AppData\Roaming\.minecraft\assets\virtual\legacy

Launching in C:\Users\Mark\AppData\Roaming\.minecraft

Half command: C:\Program Files\Java\jre1.8.0_25\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -Djava.library.path=C:\Users\Mark\AppData\Roaming\.minecraft\versions\1.7.2-Forge10.12.2.1147\1.7.2-Forge10.12.2.1147-natives-38438432743447 -cp C:\Users\Mark\AppData\Roaming\.minecraft\libraries\net\minecraftforge\forge\1.7.2-10.12.2.1147\forge-1.7.2-10.12.2.1147.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.9\launchwrapper-1.9.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.10.2\scala-library-2.10.2.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.10.2\scala-compiler-2.10.2.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.3.1\vecmath-1.3.1.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.10.Final\netty-all-4.0.10.Final.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\15.0\guava-15.0.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.3\authlib-1.3.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\Mark\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\Mark\AppData\Roaming\.minecraft\versions\1.7.2-Forge10.12.2.1147\1.7.2-Forge10.12.2.1147.jar net.minecraft.launchwrapper.Launch

Fatal error launching game. Report this to http://mojang.atlassian.net please!

java.lang.NullPointerException

at net.minecraft.launcher.GameLauncher.getMinecraftArguments(GameLauncher.java:480)

at net.minecraft.launcher.GameLauncher.launchGame(GameLauncher.java:423)

at net.minecraft.launcher.GameLauncher.onDownloadJobFinished(GameLauncher.java:693)

at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:124)

at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:15)

at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:94)

at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

 

FML Team help!!! i think i need a patch or something

But i need to play 1.7.2 and i have my other pc and i installed it correctly but at this one does not work.

No i don't i use mineshafter