[16:57:56] [main/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[16:57:56] [main/INFO]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[16:57:56] [main/INFO]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[16:57:56] [main/INFO]: Forge Mod Loader version 7.2.21.967 for Minecraft 1.7.2 loading
[16:57:56] [main/INFO]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.7.0_07, running on Windows 7:amd64:6.1, installed at C:\Program Files\Java\jre7
[16:57:56] [main/INFO]: Managed to load a deobfuscated Minecraft name- we are in a deobfuscated environment. Skipping runtime deobfuscation
[16:57:56] [main/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[16:57:56] [main/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[16:57:56] [main/INFO]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[16:57:56] [main/INFO]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[16:57:56] [main/INFO]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[16:57:56] [main/ERROR]: The binary patch set is missing. Either you are in a development environment, or things are not going to work!
[16:57:57] [main/ERROR]: The minecraft jar file:/C:/Users/tammi/.gradle/caches/minecraft/net/minecraftforge/forge/1.7.2-10.12.0.967/forge-1.7.2-10.12.0.967-mcp.jar!/net/minecraft/client/ClientBrandRetriever.class appears to be corrupt! There has been CRITICAL TAMPERING WITH MINECRAFT, it is highly unlikely minecraft will work! STOP NOW, get a clean copy and try again!
[16:57:57] [main/ERROR]: FML has been ordered to ignore the invalid or missing minecraft certificate. This is very likely to cause a problem!
[16:57:57] [main/ERROR]: Technical information: ClientBrandRetriever was at jar:file:/C:/Users/tammi/.gradle/caches/minecraft/net/minecraftforge/forge/1.7.2-10.12.0.967/forge-1.7.2-10.12.0.967-mcp.jar!/net/minecraft/client/ClientBrandRetriever.class, there were 0 certificates for it
[16:57:57] [main/ERROR]: FML appears to be missing any signature data. This is not a good thing
[16:57:57] [main/INFO]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[16:57:57] [main/INFO]: Calling tweak class cpw.mods.fml.common.launcher.FMLDeobfTweaker
[16:57:58] [main/INFO]: Launching wrapped minecraft {net.minecraft.client.main.Main}
[16:58:00] [main/ERROR]: Unable to launch
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_07]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_07]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_07]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_07]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?]
Caused by: joptsimple.MissingRequiredOptionException: Missing required option(s) ['accessToken']
at joptsimple.OptionParser.ensureRequiredOptions(OptionParser.java:447) ~[OptionParser.class:?]
at joptsimple.OptionParser.parse(OptionParser.java:437) ~[OptionParser.class:?]
at net.minecraft.client.main.Main.main(Main.java:44) ~[Main.class:?]
... 6 more

You need to change your java client arguments, the accessToken argument is now required to start the game.  They should look like this-

 

--version 1.7.2 --tweakClass cpw.mods.fml.common.launcher.FMLTweaker --accessToken Player1234

 

I think Player1234 can be changed to any user id, but don't count on it.

Uhm, shouldn't version stay as 1.6?

Uhm, shouldn't version stay as 1.6?

Not if your modding 1.7