EDIT1:
Also launcher doesnt seem to be working for me. It opens up a cmd box and instantly closes it again.
EDIT2:
After using some lightning fast reading i managed to read this:
Could not find or load main class
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Just for bug-solving purposes, could you please execute the launcher .jar file via commandline (open start menu, and type cmd for win7) then navigate to the file by using cd e.g. "cd C:\Users\UsernameGoeshere\" and then execute "java -jar launcher.jar"
Thank you very much for your feedback, would be very interesting to hear if you can execute the ftb launcher without converting it to .exe.
nylser