Mac Feed the Beast won't load worlds.

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Sixtennis

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Jul 29, 2019
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Hi everyone, I'm having a problem with FTB, and I was hoping to find a solution here! I've been able to use this modpack in the past without any troubles, it's only been in the last couple of weeks that I haven't been able to launch the game.

So, to summarize, I can open the launcher perfectly, and I select the Minecrack Pack, and launch the game. It goes to the main screen, where I can click on single player and go to the menu screen for world generation. When I click the "Create New World" button, the world begins to generate, and it says "building terrain" and all that. The problem comes in when it tries to place me into the world. The loading screen disappears and flashes the menu screen (although it has always done this, even when the modpack was working correctly), but then it goes back to the loading screen, saying that it is shutting down the server. This is when my game freezes, forcing me to restart my computer.

I am running the latest version of OS X Mountain Lion, and yes, I have downgraded my Java to Java 6, and I've also completely deleted and reinstalled the modpack. There really should be no reason that my game wasn't working, because between the time when the game worked and now, I haven't changed anything on my computer, or downloaded any other programs.

I'm not sure which file you will need to diagnose the problem, so I've uploaded both of the text files that are located in the FTB folder with the jar.

Thank you all very much in advance!
~Sixtennis
 

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Please post your entire client side console log on pastebin.com and link your paste URL here. This is the other window that is opened by the FTB launcher. Please post any and all other logs you can provide to pastebin.com and link those as well. Logs are much easier to read when uploaded to pastebin. To prevent future issues, such as pastebin flagging your log as spam and deleting it, it is simplest to create an account on pastebin.com and use that account to upload your logs.
 
Please post your entire client side console log on pastebin.com and link your paste URL here. This is the other window that is opened by the FTB launcher. Please post any and all other logs you can provide to pastebin.com and link those as well. Logs are much easier to read when uploaded to pastebin. To prevent future issues, such as pastebin flagging your log as spam and deleting it, it is simplest to create an account on pastebin.com and use that account to upload your logs.

http://pastebin.com/0icETMGg

Here you go, I think I did it correctly! And as an update, for some reason now the FTB launcher works with the Direwolf pack, but still not the Mindcrack one which I generally use. Also, even though the DireWolf pack works, after about 10 minutes or so, it suffers a massive lag spike and closes the server haha.

Thank you for your feedback!
 
Its Exception 'NoClassDefFoundError', Some Source Code Error.
EDIT:
This is it, You need more RAM.
 
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