If you are getting the error "can't open sg_07.bin for writing, 32" when starting your launcher, after typing in your password, or even just crashing in general; this is how i solved the problem.
I tried restarting my PC first and it worked! If that does not work than open tables of processes- turn off process named "sg.exe".
If that did not solve your problem CONTACT an admin or members of sg team. If you want you can contact me, I might be able to help.
Hope this helped!