Постоянно вылетает лаунчер

[D1zR1d3r 0]

[16:16:54] [WARN]: 
ru.excalibur.launcher.y.y.a: Crash with reason <unknown>
    at ru.excalibur.launcher.y.y.D.d(i:168) ~[launcher.jar:?]
    at ru.excalibur.launcher.y.y.D.d(i:260) ~[launcher.jar:?]
    at ru.excalibur.launcher.y.y.g.d(fb:143) ~[launcher.jar:?]
    at ru.excalibur.launcher.y.y.f.d(xb:355) ~[launcher.jar:?]
    at ru.excalibur.launcher.y.y.f.d(xb:55) ~[launcher.jar:?]
    at ru.excalibur.launcher.y.y.f.d(xb:160) ~[launcher.jar:?]
    at ru.excalibur.launcher.s.y.y.k.d(mc:231) ~[launcher.jar:?]
    at ru.excalibur.launcher.s.D.run(dc:156) ~[launcher.jar:?]
[16:16:54] [INFO]: Sending notify...
 

[Kiari 255]