Crash When Gets To MC Screen

[AcidicCraft]

When I try and play feed the beast it installs everything sets it up and appears to work fine. As soon as it is done with the fml is setting up your minecraft environment part it goes to black minecraft screen and insta-quits. I am on make os x and am using java 7. I am also using the jar launcher.

 

[Steve.0]

Having exact same problem, using Windows 7, Java 7, jar launcher. Also ensured I have an uncorrupted version of mincraft.jar for 1.4.2

 

[aanthony3]

Can you post a log there should be a file FTBLauncherLog in the same folder the launcher is in?

 

[Meldiron]

Most likely you'r using java 32bit and have raised the max memory setting in the launcher beyond 1gb.
Setting it back to 1gb or uninstalling java 32bit and installing java 64 bit (if you have 64bit OS!) should solve the problem.

 

[Steve.0]

ya that was it. Bringing it back to 1GB solved the issue, thanks!!

 

[AcidicCraft]

Mine was set at 1gb and it still does it here is the log:
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 Loading jars...
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 Loading URL: file:/Users/Peyton/Desktop/FTBBETAA/instMods/MinecraftForge.zip
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 Loading URL: file:/Users/Peyton/Desktop/FTBBETAA/minecraft/bin/minecraft.jar
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 Loading URL: file:/Users/Peyton/Desktop/FTBBETAA/minecraft/bin/lwjgl.jar
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 Loading URL: file:/Users/Peyton/Desktop/FTBBETAA/minecraft/bin/lwjgl_util.jar
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 Loading URL: file:/Users/Peyton/Desktop/FTBBETAA/minecraft/bin/jinput.jar
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 Loading natives...
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 Fixed Minecraft Path: Field was private static java.io.File net.minecraft.client.Minecraft.an
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 MCDIR: /Users/Peyton/Desktop/FTBBETAA/Library/Application Support/minecraft
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 2012-11-20 18:09:32 [INFO] [ForgeModLoader] Forge Mod Loader version 4.2.18.433 for Minecraft 1.4.2 loading
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 2012-11-20 18:09:32 [INFO] [STDOUT] Adding Accesstransformer map: codechickencore_at.cfg
23:09:32 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 2012-11-20 18:09:32 [INFO] [STDOUT] Adding Accesstransformer map: nei_at.cfg
23:09:33 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 2012-11-20 18:09:33 [INFO] [STDOUT] Inserted super call into auk.c
23:09:33 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 2012-11-20 18:09:33 [INFO] [STDOUT] atq was overriden from NotEnoughItems 1.4.1.2.jar
23:09:34 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 2012-11-20 18:09:34 [INFO] [STDOUT] Generated BlockMobSpawner helper method.
23:09:34 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 2012-11-20 18:09:34 [INFO] [STDOUT] 27 achievements
23:09:35 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 2012-11-20 18:09:35 [INFO] [STDOUT] 208 recipes
23:09:35 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 2012-11-20 18:09:35 [INFO] [STDOUT] Setting user: AcidicCraft, 2434082038650426443
23:09:35 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 2012-11-20 18:09:35 [INFO] [STDERR] Client asked for parameter: server
23:09:35 [INFO] net.ftb.gui.LauncherConsole$OutputOverride.write:63 2012-11-20 18:09:35 [INFO] [STDOUT] LWJGL Version: 2.4.2

 

[prointelgamer]

How many ram have you?

 

[Meldiron]

Try deleting the folder "C:\Users\[your username]\AppData\Roaming\ftblauncher", then delete the launcher and the folders it made.
Now download the launcher again from the ftb site and make a new clean folder on your desktop for your launcher instead of just running the launcher directly from your desktop.

 

[notyepenyar]

I'm having the exact same problem. i tried deleting all the files and re-downloading, but it just keeps crashing as soon as the minecraft screen comes up. The ram is set at 1gb

 

[Calamityblue]

Aha! I had this problem. If you went into the IRC channel, you'd notice it in the MOTD. The solution: Go back to Java 6 and uninstall 7.
LINK TO APPLE KB SOLUTION: http://support.apple.com/kb/HT5559?viewlocale=en_US

 

[AcidicCraft]

Calamity blue I have triedd that about 5 times now and when I enter java -version at the terminal it still says java 7. After I enter the third command it says not a directory.

 

[notyepenyar]

Aha! I had this problem. If you went into the IRC channel, you'd notice it in the MOTD. The solution: Go back to Java 6 and uninstall 7.
LINK TO APPLE KB SOLUTION: http://support.apple.com/kb/HT5559?viewlocale=en_US

Sadly this wont work for me I have to use java 7 for schoolwork.