Could not find or load main class

[BlackGhosts070]

i got an very anoying problem when i try to start my ftb, when i launch it it will say in the log: could not find or load main class. i searched on google but i canot find something thats helped me....

please help me

(srry for my speling, got dyslexia :s)

 

[lavarthan]

Welcome. Please follow the basic troubleshooting guide carefully and fully. It is known to solve many of these types of problems. Once completed if you are still experiencing problems please post a console log to pastebin.com by clicking on the 'Paste my log to pastebin.com' button. This will add a link to the bottom of the console that you post here.

 

[BlackGhosts070]

this is my log http://pastebin.com/DnFBf5JZ

 

[lavarthan]

Thank you. Is this just after you open the launcher and everything loads or is this from trying to run a pack? Please also note here about 32bit and the new 1.6.4 packs if you are trying to use one.