I install forge for 1.5.1 and is says
Fatal error loading FML check ForgeModLoader-client-0.log for more details
and that says
2013-03-29 12:07:59 [iNFO] [ForgeModLoader] Forge Mod Loader version 5.1.8.611 for Minecraft 1.5.1 loading
2013-03-29 12:07:59 [iNFO] [ForgeModLoader] Java is Java HotSpot 64-Bit Server VM, version 1.7.0_17, running on Windows 7:amd64:6.1, installed at C:\Program Files\Java\jre7
2013-03-29 12:07:59 [FINE] [ForgeModLoader] Java classpath at launch is C:\Users\irich19\Desktop\Personal Pictures\stuff\Things\Minecraft.exe
2013-03-29 12:07:59 [FINE] [ForgeModLoader] Java library path at launch is C:\Program Files\Java\jre7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\WIDCOMM\Bluetooth Software\;C:\Program Files\WIDCOMM\Bluetooth Software\syswow64;C:\Program Files (x86)\Common Files\Roxio Shared\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Shared\OEM\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Shared\OEM\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Shared\OEM\12.0\DLLShared\;C:\Program Files (x86)\Roxio 2010\OEM\AudioCore\;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files\Java\jre7\bin;.
2013-03-29 12:07:59 [FINE] [ForgeModLoader] Enabling runtime deobfuscation
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] All core mods are successfully located
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Discovering coremods
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Found a candidate coremod CodeChickenCore 0.8.1.jar
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Loading coremod CodeChickenCore 0.8.1.jar
2013-03-29 12:07:59 [WARNING] [ForgeModLoader] The coremod codechicken.core.asm.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Loaded coremod CodeChickenCore 0.8.1.jar
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Found a candidate coremod CustomPortForge.jar
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Loading coremod CustomPortForge.jar
2013-03-29 12:07:59 [WARNING] [ForgeModLoader] The coremod CustomLAN.CoreMod.CustomLANLoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Loaded coremod CustomPortForge.jar
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Found a candidate coremod DynamicLights_1.4.6.jar
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Loading coremod DynamicLights_1.4.6.jar
2013-03-29 12:07:59 [WARNING] [ForgeModLoader] The coremod atomicstryker.dynamiclights.common.DLFMLCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Loaded coremod DynamicLights_1.4.6.jar
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Found a candidate coremod NotEnoughItems 1.4.7.1.jar
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Loading coremod NotEnoughItems 1.4.7.1.jar
2013-03-29 12:07:59 [WARNING] [ForgeModLoader] The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Loaded coremod NotEnoughItems 1.4.7.1.jar
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Found library file argo-small-3.2.jar present and correct in lib dir
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Found library file guava-14.0-rc3.jar present and correct in lib dir
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Found library file asm-all-4.1.jar present and correct in lib dir
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Found library file bcprov-jdk15on-148.jar present and correct in lib dir
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Found library file deobfuscation_data_1.5.1.zip present and correct in lib dir
2013-03-29 12:07:59 [FINEST] [ForgeModLoader] Found library file scala-library.jar present and correct in lib dir
2013-03-29 12:08:08 [iNFO] [sTDERR] Exception in thread "Thread-5" java.lang.RuntimeException: java.lang.NoClassDefFoundError: cpw/mods/fml/common/asm/ASMTransformer
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:259)
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:229)
2013-03-29 12:08:08 [iNFO] [sTDERR] at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)
2013-03-29 12:08:08 [iNFO] [sTDERR] at net.minecraft.Launcher.replace(Launcher.java:136)
2013-03-29 12:08:08 [iNFO] [sTDERR] at net.minecraft.Launcher$1.run(Launcher.java:79)
2013-03-29 12:08:08 [iNFO] [sTDERR] Caused by: java.lang.NoClassDefFoundError: cpw/mods/fml/common/asm/ASMTransformer
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.lang.ClassLoader.defineClass1(Native Method)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.lang.ClassLoader.defineClass(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.security.SecureClassLoader.defineClass(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.net.URLClassLoader.defineClass(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.net.URLClassLoader.access$100(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.security.AccessController.doPrivileged(Native Method)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.net.URLClassLoader.findClass(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:134)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.registerTransformer(RelaunchClassLoader.java:96)
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:271)
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
2013-03-29 12:08:08 [iNFO] [sTDERR] ... 5 more
2013-03-29 12:08:08 [iNFO] [sTDERR] Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.common.asm.ASMTransformer
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:211)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] ... 20 more
2013-03-29 12:08:08 [iNFO] [sTDERR] Caused by: java.lang.NoClassDefFoundError: net/minecraftforge/event/Event
2013-03-29 12:08:08 [iNFO] [sTDERR] at net.minecraftforge.transformers.EventTransformer.buildEvents(EventTransformer.java:59)
2013-03-29 12:08:08 [iNFO] [sTDERR] at net.minecraftforge.transformers.EventTransformer.transform(EventTransformer.java:35)
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:292)
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:199)
2013-03-29 12:08:08 [iNFO] [sTDERR] ... 22 more
2013-03-29 12:08:08 [iNFO] [sTDERR] Caused by: java.lang.ClassNotFoundException: net.minecraftforge.event.Event
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:211)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-03-29 12:08:08 [iNFO] [sTDERR] ... 26 more
2013-03-29 12:08:08 [iNFO] [sTDERR] Caused by: java.lang.AbstractMethodError
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:292)
2013-03-29 12:08:08 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:199)
2013-03-29 12:08:08 [iNFO] [sTDERR] ... 28 more
help