I click on Arma 3 in steam to launch it and it doesn't show up. When launching it and looking at the task manager, I see that it starts up and then instantly shuts down. This happened after I restarted my computer. Launching it from the files doesn't work either. I can launch the game via the arma3.exe in the files though.

This is what I got when I looked in the files

2015-06-30 15:04:08,573 [ERROR] 1: App [Launcher.App.SetCulture:0] Error occured while setting UI thread fallback culture.
2015-06-30 15:04:08,574 [ERROR] 1: App [Launcher.App.SetCulture:0] System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Root element is missing. (C:\Users\llAaronll\AppData\Local\Bohemia_Interactive\arma3launcher.exe_Url_gnedm5ou2yeghl5qh132wepoev02lo32\1.2.131.120\user.config) ---> System.Xml.XmlException: Root element is missing. {F26530}