The launcher works fine for me, but when I click play vannilla a "Songs of Syx Error Message"  apears and displays the following:

java.lang.ArrayIndexOutOfBoundsException: 5
at main.settings.Setting.printValue(Setting.java:51)

|-------------------|
|     ERROR LOG     |
|-------------------|
java.lang.ArrayIndexOutOfBoundsException: 5
at main.settings.Setting.printValue(Setting.java:51)
at main.settings.GSettings.printStatus(GSettings.java:105)
at snake2d.CORE.create(CORE.java:84)
at menu.Menu.start(Menu.java:50)
at main.Syx.main(Syx.java:24)

I have tried both normal and dev version from exe and launching the jar files directly from the command prompt. I have also tried all these things in administrator mode and have updated my java, but nothing is working. I am on windows 8.1

Ok, it can be fixed!

I will fix it permanently as I'm reworking the launcher ATM. But until then, you can do the following:

delete settings.prop in res/settings

You might need to restart the launcher 2 times for this to work.

Your settings might become a bit wanky after this, so look over them when you can start the game.

Thanks it worked