Whenever I launch Minecraft, forge downloads the lib files, but they appear to be corrupt. When I tried to download these files manually, they are still corrupt. Does anyone know what's happening?
FML crash log:
2013-02-19 20:37:03 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.7.4.520 for Minecraft 1.4.7 loading
2013-02-19 20:37:03 [FINEST] [ForgeModLoader] All core mods are successfully located
2013-02-19 20:37:03 [FINEST] [ForgeModLoader] Discovering coremods
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] There were errors during initial FML setup. Some files failed to download or were otherwise corrupted. You will need to manually obtain the following files from these download links and ensure your lib directory is clean.
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/argo-2.25.jar
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/asm-all-4.0.jar
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-147.jar
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] <===========>
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] The following is the errors that caused the setup to fail. They may help you diagnose and resolve the issue
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] The file argo-2.25.jar was found in your lib directory and has an invalid checksum null (expecting bb672829fde76cb163004752b86b0484bd0a7f4b) - it is unlikely to be the correct download, please move it out of the way and try again.
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] The file guava-12.0.1.jar was found in your lib directory and has an invalid checksum null (expecting b8e78b9af7bf45900e14c6f958486b6ca682195f) - it is unlikely to be the correct download, please move it out of the way and try again.
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] The file asm-all-4.0.jar was found in your lib directory and has an invalid checksum null (expecting 98308890597acb64047f7e896638e0d98753ae82) - it is unlikely to be the correct download, please move it out of the way and try again.
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] The file bcprov-jdk15on-147.jar was found in your lib directory and has an invalid checksum null (expecting b6f5d9926b0afbde9f4dbe3db88c5247be7794bb) - it is unlikely to be the correct download, please move it out of the way and try again.
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] <<< ==== >>>
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] The following is diagnostic information for developers to review.
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] Error details
java.lang.RuntimeException: The file argo-2.25.jar was found in your lib directory and has an invalid checksum null (expecting bb672829fde76cb163004752b86b0484bd0a7f4b) - it is unlikely to be the correct download, please move it out of the way and try again.
at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:160)
at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)
at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:242)
at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)
at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)
at net.minecraft.Launcher.init(Launcher.java:108)
at MCFrame.start(MCFrame.java:72)
at MultiMCLauncher.main(MultiMCLauncher.java:275)
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] Error details
java.lang.RuntimeException: The file guava-12.0.1.jar was found in your lib directory and has an invalid checksum null (expecting b8e78b9af7bf45900e14c6f958486b6ca682195f) - it is unlikely to be the correct download, please move it out of the way and try again.
at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:160)
at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)
at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:242)
at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)
at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)
at net.minecraft.Launcher.init(Launcher.java:108)
at MCFrame.start(MCFrame.java:72)
at MultiMCLauncher.main(MultiMCLauncher.java:275)
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] Error details
java.lang.RuntimeException: The file asm-all-4.0.jar was found in your lib directory and has an invalid checksum null (expecting 98308890597acb64047f7e896638e0d98753ae82) - it is unlikely to be the correct download, please move it out of the way and try again.
at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:160)
at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)
at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:242)
at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)
at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)
at net.minecraft.Launcher.init(Launcher.java:108)
at MCFrame.start(MCFrame.java:72)
at MultiMCLauncher.main(MultiMCLauncher.java:275)
2013-02-19 20:37:03 [sEVERE] [ForgeModLoader] Error details
java.lang.RuntimeException: The file bcprov-jdk15on-147.jar was found in your lib directory and has an invalid checksum null (expecting b6f5d9926b0afbde9f4dbe3db88c5247be7794bb) - it is unlikely to be the correct download, please move it out of the way and try again.
at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:160)
at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)
at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:242)
at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)
at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)
at net.minecraft.Launcher.init(Launcher.java:108)
at MCFrame.start(MCFrame.java:72)
at MultiMCLauncher.main(MultiMCLauncher.java:275)
2013-02-19 20:37:05 [iNFO] [sTDERR] Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: A fatal error occured and FML cannot continue
2013-02-19 20:37:05 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:175)
2013-02-19 20:37:05 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:242)
2013-02-19 20:37:05 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)
2013-02-19 20:37:05 [iNFO] [sTDERR] at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)
2013-02-19 20:37:05 [iNFO] [sTDERR] at net.minecraft.Launcher.init(Launcher.java:108)
2013-02-19 20:37:05 [iNFO] [sTDERR] at MCFrame.start(MCFrame.java:72)
2013-02-19 20:37:05 [iNFO] [sTDERR] at MultiMCLauncher.main(MultiMCLauncher.java:275)
2013-02-19 20:37:05 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: A fatal error occured and FML cannot continue
2013-02-19 20:37:05 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:228)
2013-02-19 20:37:05 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)
2013-02-19 20:37:05 [iNFO] [sTDERR] ... 6 more