Im not getting anerror report, unless its shown on the console which i have set to not display.
EDIT: Just tried it again with console displaying.
This is what the console reads from last boot up entry:
2013-05-27 23:41:04 [INFO] [STDOUT] Loading World: local/YogCraft
2013-05-27 23:41:08 [INFO] [STDOUT] Loaded codechicken.nei.plugins.redpower.NEIRedPowerConfig
2013-05-27 23:41:08 [INFO] [STDOUT] Loaded thermalexpansion.plugins.nei.NEIThermalExpansionConfig
2013-05-27 23:41:08 [INFO] [STDOUT] IC2 NEI Submodule initialized
2013-05-27 23:41:08 [INFO] [STDOUT] Loaded ic2.neiIntegration.core.NEIIC2Config
2013-05-27 23:41:08 [INFO] [STDOUT] Loaded ic2.advancedmachines.client.NEIAdvancedMachinesConfig
2013-05-27 23:41:08 [INFO] [STDOUT] Loaded codechicken.enderstorage.internal.NEIEnderStorageConfig
2013-05-27 23:41:08 [INFO] [STDOUT] Loaded chb.mods.mffs.nei.NEI_MFFS_Config
2013-05-27 23:41:09 [INFO] [STDOUT] Loaded mistaqur.nei.common.NEIPluginsConfig
2013-05-27 23:41:09 [INFO] [STDOUT] Loaded powercrystals.powerconverters.NEIPowerConvertersConfig
2013-05-27 23:41:09 [INFO] [STDOUT] Loaded com.shadwdrgn.soulshards.NEISoulShardsConfig
2013-05-27 23:41:09 [INFO] [STDOUT] Loaded codechicken.wirelessredstone.addons.NEIWirelessAddonConfig
2013-05-27 23:41:09 [INFO] [GraviGun] [1.4.7v2] Received world props from server.
2013-05-27 23:41:09 [INFO] [PortalGun] [1.4.7v5] Received world props from server.
2013-05-27 23:41:38 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:41:38 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:41:38 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:41:38 [INFO] [ForgeModLoader] [Thaumcraft] Removed -24 aura nodes when world 7 unloaded.
2013-05-27 23:41:38 [INFO] [ForgeModLoader] Unloading dimension 7
2013-05-27 23:41:38 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:41:38 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:41:38 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:41:38 [INFO] [ForgeModLoader] [Thaumcraft] Removed -24 aura nodes when world 1 unloaded.
2013-05-27 23:41:38 [INFO] [ForgeModLoader] Unloading dimension 1
2013-05-27 23:41:43 [SEVERE] [ForgeModLoader] Detected leaking worlds in memory. There are 4 worlds that appear to be persisting. A mod is likely caching the world incorrectly
2013-05-27 23:41:43 [SEVERE] [ForgeModLoader] The world 1729608 (YogCraft) has leaked.
2013-05-27 23:41:43 [SEVERE] [ForgeModLoader] The world c0260e (YogCraft) has leaked.
2013-05-27 23:41:48 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:41:48 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:41:48 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:41:48 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:41:48 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:41:48 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:42:27 [INFO] [STDOUT] ComputerCraft: Searching for RedPowerWorld...
2013-05-27 23:42:27 [INFO] [STDOUT] ComputerCraft: RedPowerWorld and methods located.
2013-05-27 23:42:33 [INFO] [Minecraft] Giving DragonWhisp 8 of Fuel Can Fuel Stored: 1000 / 1000
2013-05-27 23:42:33 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:42:33 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:42:33 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:42:33 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:42:33 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:42:33 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:42:56 [INFO] [STDOUT] Error in class 'CodecJOrbis'
2013-05-27 23:42:56 [INFO] [STDOUT] Unable to acquire inputstream in method 'initialize'.
2013-05-27 23:42:56 [INFO] [STDOUT] ERROR MESSAGE:
2013-05-27 23:42:56 [INFO] [STDOUT] C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\YogCraft\minecraft\Flan\FC pack\sounds\viper.ogg (The system cannot find the file specified)
2013-05-27 23:42:56 [INFO] [STDOUT] STACK TRACE:
2013-05-27 23:42:56 [INFO] [STDOUT] java.io.FileInputStream.open(Native Method)
2013-05-27 23:42:56 [INFO] [STDOUT] java.io.FileInputStream.<init>(Unknown Source)
2013-05-27 23:42:56 [INFO] [STDOUT] java.io.FileInputStream.<init>(Unknown Source)
2013-05-27 23:42:56 [INFO] [STDOUT] sun.net.
www.protocol.file.FileURLConnection.connect(Unknown Source)
2013-05-27 23:42:56 [INFO] [STDOUT] sun.net.
www.protocol.file.FileURLConnection.getInputStream(Unknown Source)
2013-05-27 23:42:56 [INFO] [STDOUT] paulscode.sound.codecs.CodecJOrbis.openInputStream(Unknown Source)
2013-05-27 23:42:56 [INFO] [STDOUT] paulscode.sound.codecs.CodecJOrbis.initialize(Unknown Source)
2013-05-27 23:42:56 [INFO] [STDOUT] paulscode.sound.libraries.LibraryLWJGLOpenAL.loadSound(Unknown Source)
2013-05-27 23:42:56 [INFO] [STDOUT] paulscode.sound.libraries.LibraryLWJGLOpenAL.newSource(Unknown Source)
2013-05-27 23:42:56 [INFO] [STDOUT] paulscode.sound.SoundSystem.CommandNewSource(Unknown Source)
2013-05-27 23:42:56 [INFO] [STDOUT] paulscode.sound.SoundSystem.CommandQueue(Unknown Source)
2013-05-27 23:42:56 [INFO] [STDOUT] paulscode.sound.CommandThread.run(Unknown Source)
2013-05-27 23:43:18 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:43:18 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:43:18 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:43:18 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:43:18 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:43:18 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:44:03 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:44:03 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:44:03 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:44:03 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:44:03 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:44:03 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:44:48 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:44:48 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:44:48 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:44:48 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:44:48 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:44:48 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:45:33 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:45:33 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:45:33 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:45:33 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:45:33 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:45:33 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:46:18 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:46:18 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:46:18 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
2013-05-27 23:46:18 [INFO] [STDOUT] Flan's Mod : Failed to create file
2013-05-27 23:46:18 [INFO] [STDOUT] Flan's Mod : C:\Documents and Settings\Bean\Desktop\FTB (YogCraft Modpack)\Exe\saves\YogCraft\teams.dat
2013-05-27 23:46:18 [INFO] [STDOUT] Flan's Mod : Failed to save to teams.dat
EDIT 2: After looking through all of this i realised that its continuously says that it cant find viper.ogg sound file. So i looked through all of the files that was downloaded to see if I could find the file manually and insert it myself. Unfortunately it seems like the file wasnt included in the zip...Does anyone think that the absence of this sound file could be the problem?
Also I noticed that it reports world leaks??? WTF is that and, can it be solved??
Many thx to any and all help