Ошибка приложения на Android устройстве

USER_COMMENT=None ANDROID_VERSION=4.3.1 APP_VERSION_NAME=3.1.3.1 BRAND=htc PHONE_MODEL=Rezound CUSTOM_DATA= STACK_TRACE=: An error occured while executing doInBackground() at android.os.AsyncTask$3.done(AsyncTask.java:299) at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352) at java.util.concurrent.FutureTask.setException(FutureTask.java:219) at java.util.concurrent.FutureTask.run(FutureTask.java:239) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) at java.lang.Thread.run(Thread.java:841) Caused by: java.lang.StringIndexOutOfBoundsException: length=9; regionStart=0; regionLength=-1 at java.lang.String.startEndAndLength(String.java:583) at java.lang.String.substring(String.java:1464) at ru.flirchi.android.b.a(Unknown Source) at ru.flirchi.android.e.d.a(Unknown Source) at ru.flirchi.android.e.d.a(Unknown Source) at ru.flirchi.android.e.d.doInBackground(Unknown Source) at android.os.AsyncTask$2.call(AsyncTask.java:287) at java.util.concurrent.FutureTask.run(FutureTask.java:234) ... 4 more java.lang.StringIndexOutOfBoundsException: length=9; regionStart=0; regionLength=-1 at java.lang.String.startEndAndLength(String.java:583) at java.lang.String.substring(String.java:1464) at ru.flirchi.android.b.a(Unknown Source) at ru.flirchi.android.e.d.a(Unknown Source) at ru.flirchi.android.e.d.a(Unknown Source) at ru.flirchi.android.e.d.doInBackground(Unknown Source) at android.os.AsyncTask$2.call(AsyncTask.java:287) at java.util.concurrent.FutureTask.run(FutureTask.java:234) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) at java.lang.Thread.run(Thread.java:841)