Voltz wont load for some reason

[badatnames16]

I downloaded voltz and tried to launch it but when i do the launcher will disappear for about .3 seconds like its going to load but it immediately goes back to the launcher screen. there isn't any crash reports or anything like that so i don't know what files i can attach but if someone does then please tell me and i will. i also have tekkit downloaded but that launches just fine.