Tekkit classic not starting up

[Basic456]

hey there,

I still like to play the good old tekkit classic modpack like I have been doing the last couple of years. 
Since my upgrade to a new graphics card, the modpack won't start anymore. (I'm not sure this has something to do with it) 
When I start my launcher and click  'play', the launcher disappears as it should, but pops back after a while and nothing happens.

I have reinstalled my launcher, my java, my gpu driver, etc without any succes

I'm running java windows offline version 8 update 131 64 bit (on a windows 10  pro 64 bit) and set my ram to 6gb in the launcher options.

Here are the logs from my console when I start the modpack: http://paste.ubuntu.com/25114027/

Please help me, I really love this modpack...