Crashing when launching 1.6.4 modpacks

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MatthewSonn

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Jul 29, 2019
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Operating System, bit type: Windows 7, 64-bit.
Java version/update, bit type: Version 7, update 51 (build 1.7.0_51-b13)
Launcher version: Feed the Beast Launcher v1.3.3
Completed the troubleshooting guide (y/n): Yes
Console log, pastebin.com link: http://pastebin.com/pjDBtcCB
Description of the problem:

Hi my name is Matthew, and i have an issue using the 1.6.4 modpacks from the FTB-Launcher. I've tried several "solutions" just haven't found the right one for me. I've tried the toubleshooting guide, didn't help either.

Every time i try to launch the "Monster (v1.0.3) Minecraft Version 1.6.4, By The FTB Team" it just closes down, after a while (like 2 minutes of console madness).. I get a whole lot of: Using missing texture, failures.. But I haven't been able to identify my actual problem. I tried the "LWJGL" update, Java update, re-downloading the launcher/pack, re-location the pack, etc.
I've read several threads on this forum, and other forums aswell, searched for troubleshootings on youtube aswell.

Hope someone will be able to identify my problem.
 
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JamiePhonic

New Member
Jul 29, 2019
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heres the problem (on line 4179 of your log):
Code: 
JVM Flags: 4 total; -Xms256M -Xmx3328M -XX:PermSize=256m -Xmx512M
the launcher is trying to start the game with a reserved memory space of 256 MB (-Xms256M) and a maximum of 3GB (-Xmx3328M) and permgen size of 256MB (-XX:PermSize=256m ) which is usually all it does by default. you have also specified "-Xmx512M" as extra parameters in the "additional Java parameters" section of the advanced settings and so the second max memory space parameter (-Xmx512) is overriding the first one, hence why changing the MAX RAM in the launcher is making no difference and your game is running out of RAM.

fix it by going to the settings tab of the launcher, click "advanced options" and then just clear the "additional Java parameters" box and ONLY use the recommended parameters found here Pasted below AFTER you get it to launch with the box cleared
Code: 
-Xms1024m -XX:PermSize=256m -XX:NewRatio=3 -XX:SurvivorRatio=3 -XX:TargetSurvivorRatio=80 -XX:MaxTenuringThreshold=8 -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:MaxGCPauseMillis=10 -XX:GCPauseIntervalMillis=50 -XX:MaxGCMinorPauseMillis=7 -XX:+ExplicitGCInvokesConcurrent -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=60 -XX:+BindGCTaskThreadsToCPUs -Xnoclassgc
 
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MatthewSonn

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Jul 29, 2019
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Here is what happens when i paste:
-Xms1024m -XX:permSize=256m -XX:NewRatio=3 -XX:SurvivorRatio=3 -XX:TargetSurvivorRatio=80 -XX:MaxTenuringThreshold=8 -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:MaxGCPauseMillis=10 -XX:GCPauseIntervalMillis=50 -XX:MaxGCMinorPauseMillis=7 -XX:+ExplicitGCInvokesConcurrent -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=60 -XX:+BindGCTaskThreadsToCPUs -Xnoclassgc, into my "additional Java parameters: http://pastebin.com/D0f2rnkP
 
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kittle

New Member
Jul 29, 2019
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The problem seems to be this:
Picked up _JAVA_OPTIONS: -Xmx512M

goto start -> my computer (right click) ->properties -> Advanced system settings -> Environment variables
find "_Java_options" and remove it
 
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