Android 3.0.8 崩溃，请协助分析下

java.lang.RuntimeException: Unable to start receiver cn.jpush.android.service.AlarmReceiver: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.toLowerCase(java.util.Locale)' on a null object reference
    at android.app.ActivityThread.handleReceiver(ActivityThread.java:2739)
    at android.app.ActivityThread.access$1800(ActivityThread.java:153)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1428)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:148)
    at android.app.ActivityThread.main(ActivityThread.java:5442)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.toLowerCase(java.util.Locale)' on a null object reference
    at cn.jiguang.b.a.b(Unknown Source)
    at cn.jiguang.b.a.a(Unknown Source)
    at cn.jiguang.api.JCoreInterface.init(Unknown Source)
    at cn.jpush.android.service.AlarmReceiver.onReceive(Unknown Source)
    at android.app.ActivityThread.handleReceiver(ActivityThread.java:2732)
    ... 8 more
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.toLowerCase(java.util.Locale)' on a null object reference
    at cn.jiguang.b.a.b(Unknown Source)
    at cn.jiguang.b.a.a(Unknown Source)
    at cn.jiguang.api.JCoreInterface.init(Unknown Source)
    at cn.jpush.android.service.AlarmReceiver.onReceive(Unknown Source)
    at android.app.ActivityThread.handleReceiver(ActivityThread.java:2732)
    at android.app.ActivityThread.access$1800(ActivityThread.java:153)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1428)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:148)
    at android.app.ActivityThread.main(ActivityThread.java:5442)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)

以上是友盟抓到的崩溃日志。
1、JPush消息推送功能
2、3.0.8版本
3、android平台
4、步骤未知，友盟统计上看到的崩溃log
5、根据log信息，定位到sdk源码中了。我们项目已排查，上层未发现问题。