Update failing?

[_Anjou_]

I can't update Voltz or any of my modpacks on the technic launcher. After I've selected Voltz, or tekkit lite, and I've entered my minecraft username and password and clicked login, it loads for a second and then it comes up a message saying "update failed". After that, I can't play Voltz or tekkit lite, because the message keeps coming up and closing my technic launcher. I can't get it to work with neither of Voltz or tekkit lite. What am I supposed to do?

[killthemill111]

this only works with voltz but go to options and click clear cache then login hoped this helped :)

[_Anjou_]

Indeed, it worked. It worked with every modpack. But what's not a plus is that I have to "reboot" (I don't know what else to say, my English vocabulary is not that big, I'm Swedish.) every modpack. But thank you for your help :)

[ccs]

Thanks SOO Much ive been wanting to play for so long but wouldnt update >.<

Thanks Again