Windows .exe Direwolf 20 ForgeModLoader State Engine Corrupted

[DenaliNW]

Everything seems to download fine, and I am able to get to the minecraft start menu, but cannot open a new world, or any of my saved worlds. I receive the following error:
2013-03-17 18:28:44 [SEVERE] [ForgeModLoader] The ForgeModLoader state engine has become corrupted. Probably, a state was missed by and invalid modification to a base classForgeModLoader depends on. This is a critical error and not recoverable. Investigate any modifications to base classes outside ofForgeModLoader, especially Optifine, to see if there are fixes available.
2013-03-17 18:28:44 [INFO] [STDERR] Exception in thread "Server thread" java.lang.RuntimeException: The ForgeModLoader state engine is invalid
2013-03-17 18:28:44 [INFO] [STDERR] at cpw.mods.fml.common.LoadController.transition(LoadController.java:122)
2013-03-17 18:28:44 [INFO] [STDERR] at cpw.mods.fml.common.Loader.serverStopped(Loader.java:780)
2013-03-17 18:28:44 [INFO] [STDERR] at cpw.mods.fml.common.FMLCommonHandler.handleServerStopped(FMLCommonHandler.java:469)
2013-03-17 18:28:44 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:559)
2013-03-17 18:28:44 [INFO] [STDERR] at fy.run(SourceFile:849)
I've already tried reinstalling java, erasing all my ftb files and encouraging the launcher to force a fresh download, but still get the same errors. Pastebin with complete log is here: http://pastebin.com/HHqFB3kd. Any help would be appreciated.
Thanks!

 

[dedfugasim]

Hi! I had the same problem with all modpacks for a long time. And just a few minutes ago i finally solved it. I did it by downloading a " bcprov-jdk15on-147.jar " and installing it into " [FTB folder] \ [Modpack name] \ minecraft \ lib". (Thanks to that thread: http://forum.feed-the-beast.com/threads/problem-with-mindcrack-pack.4816/ ) I hope it'll help you too!