Client Crashed and lost some saved worlds

[Min]

I don't know what happened, but for the second time in a few days my game froze and would close so I had to CTRL ALT DEL, and when I go to restart and go to select a world half of the ones I made or was just on are gone. I checked the folder under saves and nothing there either.

The world I was on I had saved and closed it numerous times, so having it crash and going to restart should of just restarted me at were I last logged in? but deleted the worlds?

Does anyone know what could be causing this? Has this happened to anyone else? It doesn't look like any crash reports or logs were made as I cant find any...

 

[Ashzification]

Need your console log, some basic system info, and what you were doing when you crashed

 

[Min]

Console Log? Is that the little window that stays open with the launcher? Can I get the info after its been closed?

I logged out of my world, and into my creative world and went and made a twilight forest to check something out and when I jumped in is when it crashed. But the crashed I had before wasn't going to twilight forest, I forget what happened.

This?

Spoiler

2013-01-12 22:35:07 [INFO] [STDOUT] Loading NEI
2013-01-12 22:35:07 [INFO] [Minecraft] Miner_Min[/127.0.0.1:0] logged in with entity id 607578 at (-3.8560345743011464, 35.67890391255536, -16.849688872379833)
2013-01-12 22:35:08 [INFO] [PortalGun] [1.4.6v2] Sending client info to server
2013-01-12 22:35:08 [INFO] [STDOUT] Loading Player: Miner_Min
2013-01-12 22:35:08 [INFO] [STDOUT] Sending serverside check to: Miner_Min
2013-01-12 22:35:08 [INFO] [PortalGun] [1.4.6v2] Recieved client info from Miner_Min
2013-01-12 22:35:08 [INFO] [Minecraft] Saving and pausing game...
2013-01-12 22:35:08 [INFO] [Minecraft] Saving chunks for level 'Test World'/Overworld
2013-01-12 22:35:08 [INFO] [STDOUT] Loading World: local/Test World
2013-01-12 22:35:08 [INFO] [PortalGun] [1.4.6v2] Received world props from server.
2013-01-12 22:35:08 [INFO] [Minecraft] Saving chunks for level 'Test World'/Nether
2013-01-12 22:35:09 [INFO] [Minecraft] Saving chunks for level 'Test World'/The End
2013-01-12 22:35:09 [INFO] [Minecraft] Saving chunks for level 'Test World'/Twilight Forest
2013-01-12 22:35:30 [INFO] [STDOUT] Sending serverside check to: Miner_Min
2013-01-12 22:35:30 [INFO] [Minecraft] Saving and pausing game...
2013-01-12 22:35:30 [INFO] [Minecraft] Saving chunks for level 'Test World'/Overworld
2013-01-12 22:35:30 [INFO] [STDOUT] Loading World: local/Test World
2013-01-12 22:35:30 [INFO] [Minecraft] Saving chunks for level 'Test World'/Nether
2013-01-12 22:35:30 [INFO] [Minecraft] Saving chunks for level 'Test World'/The End
2013-01-12 22:35:30 [INFO] [Minecraft] Saving chunks for level 'Test World'/Twilight Forest
2013-01-12 22:35:32 [WARNING] [Minecraft] Can't keep up! Did the system time change, or is the server overloaded?
2013-01-12 22:35:52 [INFO] [ForgeModLoader] [Thaumcraft] Removed 26 aura nodes when world 7 unloaded.
2013-01-12 22:35:52 [INFO] [ForgeModLoader] Unloading dimension 7
2013-01-12 22:35:52 [INFO] [ForgeModLoader] [Thaumcraft] Removed 0 aura nodes when world 1 unloaded.
2013-01-12 22:35:52 [INFO] [ForgeModLoader] Unloading dimension 1
2013-01-12 22:36:21 [INFO] [Minecraft] Giving Miner_Min 1 of Water
2013-01-12 22:36:36 [INFO] [Minecraft] Giving Miner_Min 1 of Rose
2013-01-12 22:36:53 [INFO] [Minecraft] Giving Miner_Min 1 of Diamond
2013-01-12 22:36:59 [INFO] [ForgeModLoader] Loading dimension 7 (Test World) (bdz@28660dcf)
2013-01-12 22:36:59 [INFO] [STDOUT] Cache loaded. Size = 482
2013-01-12 22:36:59 [INFO] [STDOUT] Readded hashes, hash size = 482
2013-01-12 22:36:59 [INFO] [ForgeModLoader] [Thaumcraft] Loaded 26 aura nodes for world 7
2013-01-12 22:37:20 [INFO] [STDOUT] Sending serverside check to: Miner_Min
2013-01-12 22:37:20 [WARNING] [Minecraft] Can't keep up! Did the system time change, or is the server overloaded?
2013-01-12 22:37:20 [INFO] [Minecraft] Saving and pausing game...
2013-01-12 22:37:20 [INFO] [Minecraft] Saving chunks for level 'Test World'/Overworld
2013-01-12 22:37:21 [INFO] [STDOUT] Loading World: local/Test World
2013-01-12 22:37:21 [INFO] [Minecraft] Saving chunks for level 'Test World'/Nether
2013-01-12 22:37:25 [INFO] [Minecraft] Saving chunks for level 'Test World'/Twilight Forest
2013-01-12 22:38:02 [INFO] [STDERR] Exception in thread "NEI Item Searching Thread" Exception in thread "D3D Screen Updater" java.lang.OutOfMemoryError: Java heap space
2013-01-12 22:38:02 [INFO] [STDERR] at sun.java2d.d3d.D3DScreenUpdateManager.run(Unknown Source)
2013-01-12 22:38:02 [INFO] [STDERR] at java.lang.Thread.run(Unknown Source)
2013-01-12 22:38:02 [INFO] [STDERR] java.lang.OutOfMemoryError: Java heap space
2013-01-12 22:38:02 [INFO] [STDERR] at bq.<init>(SourceFile:12)
2013-01-12 22:38:03 [INFO] [STDERR] at aam.a(AnvilChunkLoader.java:334)
2013-01-12 22:38:03 [INFO] [STDERR] at aam.a(AnvilChunkLoader.java:127)
2013-01-12 22:38:03 [INFO] [STDERR] at im.b(ChunkProviderServer.java:232)
2013-01-12 22:38:03 [INFO] [STDERR] at im.a(ChunkProviderServer.java:284)
2013-01-12 22:38:03 [INFO] [STDERR] at in.a(WorldServer.java:844)
2013-01-12 22:38:03 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:373)
2013-01-12 22:38:04 [INFO] [STDERR] at bdz.q(IntegratedServer.java:118)
2013-01-12 22:38:04 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
2013-01-12 22:38:04 [INFO] [STDERR] at fy.run(SourceFile:849)
2013-01-12 22:38:04 [INFO] [STDERR] java.lang.OutOfMemoryError: Java heap space
2013-01-12 22:38:04 [INFO] [STDERR] at java.lang.AbstractStringBuilder.<init>(Unknown Source)
2013-01-12 22:38:04 [INFO] [STDERR] at java.lang.StringBuffer.<init>(Unknown Source)
2013-01-12 22:38:05 [INFO] [STDERR] at java.text.NumberFormat.format(Unknown Source)
2013-01-12 22:38:05 [INFO] [STDERR] at mistaqur.nei.common.FuelTooltipHandler.convertHeatValue(FuelTooltipHandler.java:28)
2013-01-12 22:38:05 [INFO] [STDERR] at mistaqur.nei.common.FuelTooltipHandler.handleItemTooltip(FuelTooltipHandler.java:57)
2013-01-12 22:38:05 [INFO] [STDERR] at codechicken.nei.forge.GuiContainerManager.itemDisplayNameMultiline(GuiContainerManager.java:170)
2013-01-12 22:38:06 [INFO] [STDERR] at codechicken.nei.forge.GuiContainerManager.concatenatedDisplayName(GuiContainerManager.java:199)
2013-01-12 22:38:06 [INFO] [STDERR] at codechicken.nei.ItemList$ItemMatcher.matches(ItemList.java:39)
2013-01-12 22:38:06 [INFO] [STDERR] at codechicken.nei.ItemList$ThreadMatchSearch.run(ItemList.java:106)
2013-01-12 22:38:04 [SEVERE] [Minecraft] Encountered an unexpected exception OutOfMemoryError
java.lang.OutOfMemoryError: Java heap space
at bq.<init>(SourceFile:12)
at aam.a(AnvilChunkLoader.java:334)
at aam.a(AnvilChunkLoader.java:127)
at im.b(ChunkProviderServer.java:232)
at im.a(ChunkProviderServer.java:284)
at in.a(WorldServer.java:844)
at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:373)
at bdz.q(IntegratedServer.java:118)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
at fy.run(SourceFile:849)

EDIT: Does it mean I'm out of memory? I see in the options in ftb launcher its only at 1GB, maybe I should increase it?

 

[Nessiroj]

2013-01-12 22:38:02 [INFO] [STDERR] Exception in thread "NEI Item Searching Thread" Exception in thread "D3D Screen Updater" java.lang.OutOfMemoryError: Java heap space
2013-01-12 22:38:02 [INFO] [STDERR] at sun.java2d.d3d.D3DScreenUpdateManager.run(Unknown Source)
2013-01-12 22:38:02 [INFO] [STDERR] at java.lang.Thread.run(Unknown Source)
2013-01-12 22:38:02 [INFO] [STDERR] java.lang.OutOfMemoryError: Java heap space

Your out of memory indeed, to allocate more then 1GB in the launcher you need 64bit java 7 installed - java.sun.com
Strange thing i see, there is a d3d error that in the past with gaming referrerd to video drivers / directx. Not sure whats that about

 

[Ashzification]

Yes that's the one, granted it is not the whole log (which is most helpful).
But Nessiroj got here with an answer first anyway

 

[Min]

I upped it to around 6Gb i think, no problems yet

 

[Ashzification]

I upped it to around 6Gb i think, no problems yet

When playing single player, I've found the best results allocating around 3.5-4 GB of RAM. Java does a rather poor job at properly using memory. From what I've noticed, I lagged more when I had over 4 allocated.