the relevant part
```
[2016-07-29 17:12:00] [SHADER] ERROR COMPILING VERTEX SHADER data//shader/cube/quads13/cube-3rd.vsh STATUS: 0
[2016-07-29 17:12:00] LOG: ERROR: 0:4: 'attribute' : cannot be int
ERROR: 0:158: '&' : syntax error syntax error
[2016-07-29 17:12:00] org.schema.schine.graphicsengine.shader.ShaderException:
data//shader/cube/quads13/cube-3rd.vsh
ERROR: 0:4: 'attribute' : cannot be int
ERROR: 0:158: '&' : syntax error syntax error
[2016-07-29 17:12:00] at obfuscated.aHJ.a(SourceFile:340)
[2016-07-29 17:12:00] at obfuscated.aHJ.b(SourceFile:195)
[2016-07-29 17:12:00] at obfuscated.aHJ.<init>(SourceFile:116)
[2016-07-29 17:12:00] at obfuscated.aHQ.<init>(SourceFile:823)
[2016-07-29 17:12:00] at obfuscated.aHK.a(SourceFile:820)
[2016-07-29 17:12:00] at obfuscated.aHK.b(SourceFile:449)
[2016-07-29 17:12:00] at obfuscated.hn.d(SourceFile:427)
[2016-07-29 17:12:00] at obfuscated.hn.e_(SourceFile:331)
[2016-07-29 17:12:00] at obfuscated.azj.g(SourceFile:533)
[2016-07-29 17:12:00] at obfuscated.azj.a(SourceFile:673)
[2016-07-29 17:12:00] at obfuscated.azp.b(SourceFile:626)
[2016-07-29 17:12:00] at obfuscated.Q.e(SourceFile:907)
[2016-07-29 17:12:00] at org.schema.game.common.Starter.startMainMenu(SourceFile:1368)
[2016-07-29 17:12:00] at org.schema.game.common.Starter.main(SourceFile:946)
[2016-07-29 17:12:00] java.lang.RuntimeException: org.schema.schine.graphicsengine.shader.ShaderException:
data//shader/cube/quads13/cube-3rd.vsh
```