I have two problem I need major help PLZ!

I have two problem, the first involves exit code 1. I don't know what this means and I don't know how to fix it. It only appears when I am trying to join my own server with mods in version 1.7.10. The second problem involves exit code 805306369! I have posted about this before but it is now the same problem for my friend and I showed him how to fix it like I did and it is still not working! SOMEONE PLZ HELP!