My Modpack wont launch.

[Alkali64]

My Modpack wont launch. It closes the Technic Launcher for about a minute and then reopens. Just to clarify, I was trying to make my own Modpack. Here is the "latest.log", I didn't get a crash log.

[17:21:35] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: net.minecraftforge.fml.relauncher.FMLSecurityManager$ExitTrappedException
[17:21:35] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraftforge.fml.relauncher.FMLSecurityManager.checkPermission(FMLSecurityManager.java:49)
[17:21:35] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.SecurityManager.checkExit(Unknown Source)
[17:21:35] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.Runtime.exit(Unknown Source)
[17:21:35] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.System.exit(Unknown Source)
[17:21:35] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraft.launchwrapper.Launch.launch(Launch.java:138)
[17:21:35] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
 

[JaariAtmc]

You have added atleast one mod that isn't for your used MC version.

[Munaus]

custom pack discussion. Moved to Platform Pagoda