Technic Launcher

[polishorr]

Hi! The official launcher isn't working for me, so I was hoping to use the Technic Launcher version. However, I don't know which modpack to use. Help, please?

 

[Iwan]

Why is the official launcher not working for you?

 

[polishorr]

It's refusing to work, as it claims it's from an unknown developer or whatever. I've tried to fix that several different ways, and it hasn't worked.