Press CTRL+C on the runtime error.
Paste it here.
Restart the program, it will prompt you to do something, either safemode or copy and attach all files it will prompt you to attach.
Read about how safemode works on the wiki, if you feel the error was caused while you where modifying the settings, please clearly describe what you where doing.
edit: OS does not seem to be the issue, I am running my work on the same OS
edit: Work with me, get me all the data I need please.