Bug Minecraft Doesn't Pop Up

[Rioxas]

Hello. This is my first post so...nice to meet you all!

As the topic title states, whenever I try to launch Crash Landing, a 1.6.4 Minecraft does not appear. Instead, the FTB launcher simply disappears and nothing happens. The files are downloaded and appear to be OK.

I am running a HP Laptop, 32 bit, latest Java.

I have tried on another computer, and Crash Landing works fine. The Minecraft appears when I hit launch.

Please reply a bugfix or a way to manually start up a Minecraft with all the mods applied.
Thanks in advance!

 

[ScottulusMaximus]

Is there a crash log in your minecraft folder(crash-reports)?

You're on 32bit, what have you set your RAM to in the launcher? Anything more than 2gig and you'll likely crash

 

[Rioxas]

There is no crash report.

I have tried setting my RAM to default 1.0 G, then reduced it as I continued trying to figure out a solution.

 

[Wagon153]

I can see two problems.
One: Not enough RAM. Most 1.6 and above packs need at least 2 gigs, which you can't provide with 32 bit.
Two: Java 8. Uninstall it, replace with Java 7.

 

[ScottulusMaximus]

Is there an option to leave the ftb launcher open and see the console like with the vanilla launcher? If there is I suggest doing that to see when it dies

 

[zarendahl]

Look for the FTB launcher log in the same folder as the launcher. There will also be a second file called MinecraftLog as well. Your errors will be in either of those files.

 

[Rioxas]

2014-10-26 16:52:13 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.remove(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
Java HotSpot(TM) Client VM warning: ignoring option PermSize=256m; support was removed in 8.0

This is the bottom of the minecraftlog. It is the only bit of data that appears to be causing the problem. Anyone know a way to fix or the cause of this?

 

[rhn]

2014-10-26 16:52:13 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.remove(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
Java HotSpot(TM) Client VM warning: ignoring option PermSize=256m; support was removed in 8.0

This is the bottom of the minecraftlog. It is the only bit of data that appears to be causing the problem. Anyone know a way to fix or the cause of this?

Post the whole log to something like pastebin if you want people to help.

But tbh, I have to join the camp of sceptics. I seriously doubt you can get it to run(satisfactorily at least) on a 32bit(>1GB allocated).

 

[Wagon153]

2014-10-26 16:52:13 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.remove(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
Java HotSpot(TM) Client VM warning: ignoring option PermSize=256m; support was removed in 8.0

This is the bottom of the minecraftlog. It is the only bit of data that appears to be causing the problem. Anyone know a way to fix or the cause of this?

I can see two problems.
One: Not enough RAM. Most 1.6 and above packs need at least 2 gigs, which you can't provide with 32 bit.
Two: Java 8. Uninstall it, replace with Java 7.