FTB Ultimate Forge Error

[Maismo]

I have an normal ftb ultimate singleplayer world with no extra mods installed and just now when i go to open my singleplayer world, there is an error of the following -

2013-06-10 16:40:42 [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

I'm unsure what to do next and wanna seek some help so i can get my world back.

 

Also looking back in the console i found -

2013-06-10 16:40:25 [sEVERE] [ForgeModLoader] [AppEng] LP Integration Disabled.

 

If you need a Crash report or anything just reply, Thanks

[LexManos]

Please consult the FTB team.

Also when aksing for help ALWAYS post the FULL log.

[loordgek]

Also looking back in the console i found -

2013-06-10 16:40:25 [sEVERE] [ForgeModLoader] [AppEng] LP Integration Disabled.

 

this has nothing to do w/ the error

 

AppEng = Applied Energistics and it is search for LogisticsPipes