straydog123 found a solution to the mac failed launching
"i had the same problem and the answer is this:
your computer wants java 6
but it has java 7
download this and use it: http://sharesend.com/sek4t
you must have the linux version and name it: tekkit-launcher-latest. and put it in your downloads and launch the technic launcher (java fix 7)
this worked for me"
go straydog123!