i tried that and this came up
2013-10-18 13:21:03 [iNFO] [ForgeModLoader] Forge Mod Loader version 5.2.23.737 for Minecraft 1.5.2 loading
2013-10-18 13:21:03 [iNFO] [ForgeModLoader] Java is Java HotSpot 64-Bit Server VM, version 1.7.0_45, running on Windows 7:amd64:6.1, installed at C:Program FilesJavajre7
2013-10-18 13:21:03 [FINE] [ForgeModLoader] Java classpath at launch is Voltz.jar
2013-10-18 13:21:03 [FINE] [ForgeModLoader] Java library path at launch is C:Windowssystem32;C:WindowsSunJavabin;C:Windowssystem32;C:Windows;C:Program Files (x86)NVIDIA CorporationPhysXCommon;C:Windowssystem32;C:Windows;C:WindowsSystem32Wbem;C:WindowsSystem32WindowsPowerShellv1.0;C:Program Files (x86)QuickTimeQTSystem;.
2013-10-18 13:21:03 [FINE] [ForgeModLoader] Enabling runtime deobfuscation
2013-10-18 13:21:03 [WARNING] [ForgeModLoader] The coremod codechicken.core.asm.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-10-18 13:21:03 [WARNING] [ForgeModLoader] The coremod cofh.asm.CoFHPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-10-18 13:21:03 [WARNING] [ForgeModLoader] The coremod micdoodle8.mods.galacticraft.asm.GalacticraftPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-10-18 13:21:03 [WARNING] [ForgeModLoader] The coremod mods.immibis.microblocks.coremod.MicroblocksCoreMod does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-10-18 13:21:03 [WARNING] [ForgeModLoader] The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-10-18 13:21:03 [FINE] [ForgeModLoader] The coremod powercrystals.core.CoreLoader requested minecraft version 1.5.2 and minecraft is 1.5.2. It will be loaded.
2013-10-18 13:21:03 [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.
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/argo-small-3.2.jar
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/guava-14.0-rc3.jar
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/asm-all-4.1.jar
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/deobfuscation_data_1.5.2.zip
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/scala-library.jar
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] <===========>
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] The following is the errors that caused the setup to fail. They may help you diagnose and resolve the issue
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] The file bcprov-jdk15on-148.jar was found in your lib directory and has an invalid checksum c0b0b00b13f9709dad2f5e939666a12a50eaeb0b (expecting 960dea7c9181ba0b17e8bab0c06a43f0a5f04e65) - it is unlikely to be the correct download, please move it out of the way and try again.
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] The file scala-library.jar was found in your lib directory and has an invalid checksum f0117866aa70601aac975e39c3e24e7975a28538 (expecting 458d046151ad179c85429ed7420ffb1eaf6ddf85) - it is unlikely to be the correct download, please move it out of the way and try again.
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] <<< ==== >>>
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] The following is diagnostic information for developers to review.
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] Error details
java.lang.RuntimeException: The file bcprov-jdk15on-148.jar was found in your lib directory and has an invalid checksum c0b0b00b13f9709dad2f5e939666a12a50eaeb0b (expecting 960dea7c9181ba0b17e8bab0c06a43f0a5f04e65) - 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:193)
at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:147)
at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:45)
at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1367)
2013-10-18 13:21:03 [sEVERE] [ForgeModLoader] Error details
java.lang.RuntimeException: The file scala-library.jar was found in your lib directory and has an invalid checksum f0117866aa70601aac975e39c3e24e7975a28538 (expecting 458d046151ad179c85429ed7420ffb1eaf6ddf85) - 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:193)
at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:147)
at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:45)
at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1367)
2013-10-18 13:21:03 [iNFO] [sTDERR] Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: A fatal error occured and FML cannot continue
2013-10-18 13:21:03 [iNFO] [sTDERR]at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)
2013-10-18 13:21:03 [iNFO] [sTDERR]at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:147)
2013-10-18 13:21:03 [iNFO] [sTDERR]at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:45)
2013-10-18 13:21:03 [iNFO] [sTDERR]at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1367)
2013-10-18 13:21:03 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: A fatal error occured and FML cannot continue
2013-10-18 13:21:03 [iNFO] [sTDERR]at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:261)
2013-10-18 13:21:03 [iNFO] [sTDERR]at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
2013-10-18 13:21:03 [iNFO] [sTDERR]... 3 more
