---- Hello Minecraft! Crash Report ----
  Version: 2.3.5.7
  Time: 2016-07-04 12:58:27
  Thread: Thread[main,5,main]

  Content:
    java.lang.NullPointerException
    at org.jackhuang.hellominecraft.lookandfeel.HelloMinecraftLookAndFeel.<init>(HelloMinecraftLookAndFeel.java:50)
    at org.jackhuang.hellominecraft.launcher.Main.main(Main.java:142)


-- System Details --
  Operating System: Windows 7 (amd64), 6.1
  Java Version: 1.8.0_91, Oracle Corporation
  Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation

[12:58:27] [AWT-EventQueue-0/WARN] Failed to read localization key: ui.label.crashing
java.lang.NullPointerException
    at org.jackhuang.hellominecraft.C.i18n(C.java:65)
    at org.jackhuang.hellominecraft.views.LogWindow.showAsCrashWindow(LogWindow.java:320)
    at org.jackhuang.hellominecraft.launcher.utils.CrashReporter.lambda$uncaughtException$10(CrashReporter.java:109)
    at org.jackhuang.hellominecraft.launcher.utils.CrashReporter.access$lambda$0(CrashReporter.java)
    at org.jackhuang.hellominecraft.launcher.utils.CrashReporter$$Lambda$1.run(Unknown Source)
    at java.awt.event.InvocationEvent.dispatch(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$500(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

这个报告太模糊，建议贴上crash-report
也可能是启动器自身Bug，建议更新你的HMCL

弄了半天只是因为我的文件夹名字是一个  ！   {:10_527:}