async batch insert event log

D/ListController(21030): btn_add_to_calendar pressed
E/ERR(21030): java.lang.IllegalStateException
E/ERR(21030): at com.google.common.base.Preconditions.checkState(Preconditions.java:133)
E/ERR(21030): at com.google.api.client.googleapis.batch.BatchRequest.execute(BatchRequest.java:187)
E/ERR(21030): at com.sanoma.hockeynl.standenmotor.calender.AsyncBatchInsertEvent.doInBackground(AsyncBatchInsertEvent.java:125)
E/ERR(21030): at com.sanoma.hockeynl.standenmotor.calender.EventAsyncTask.doInBackground(EventAsyncTask.java:59)
E/ERR(21030): at com.sanoma.hockeynl.standenmotor.calender.EventAsyncTask.doInBackground(EventAsyncTask.java:1)
E/ERR(21030): at android.os.AsyncTask$2.call(AsyncTask.java:287)
E/ERR(21030): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
E/ERR(21030): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
E/ERR(21030): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
E/ERR(21030): at java.lang.Thread.run(Thread.java:856)
W/dalvikvm(21030): threadid=20: thread exiting with uncaught exception (group=0x40c19930)
E/AndroidRuntime(21030): FATAL EXCEPTION: AsyncTask #2
E/AndroidRuntime(21030): java.lang.RuntimeException: An error occured while executing doInBackground()
E/AndroidRuntime(21030): at android.os.AsyncTask$3.done(AsyncTask.java:299)
E/AndroidRuntime(21030): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
E/AndroidRuntime(21030): at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
E/AndroidRuntime(21030): at java.util.concurrent.FutureTask.run(FutureTask.java:239)
E/AndroidRuntime(21030): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
E/AndroidRuntime(21030): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
E/AndroidRuntime(21030): at java.lang.Thread.run(Thread.java:856)
E/AndroidRuntime(21030): Caused by: java.lang.RuntimeException: java.lang.IllegalStateException
E/AndroidRuntime(21030): at com.sanoma.hockeynl.standenmotor.calender.AsyncBatchInsertEvent.doInBackground(AsyncBatchInsertEvent.java:128)
E/AndroidRuntime(21030): at com.sanoma.hockeynl.standenmotor.calender.EventAsyncTask.doInBackground(EventAsyncTask.java:59)
E/AndroidRuntime(21030): at com.sanoma.hockeynl.standenmotor.calender.EventAsyncTask.doInBackground(EventAsyncTask.java:1)
E/AndroidRuntime(21030): at android.os.AsyncTask$2.call(AsyncTask.java:287)
E/AndroidRuntime(21030): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
E/AndroidRuntime(21030): ... 3 more
E/AndroidRuntime(21030): Caused by: java.lang.IllegalStateException
E/AndroidRuntime(21030): at com.google.common.base.Preconditions.checkState(Preconditions.java:133)
E/AndroidRuntime(21030): at com.google.api.client.googleapis.batch.BatchRequest.execute(BatchRequest.java:187)
E/AndroidRuntime(21030): at com.sanoma.hockeynl.standenmotor.calender.AsyncBatchInsertEvent.doInBackground(AsyncBatchInsertEvent.java:125)
E/AndroidRuntime(21030): ... 7 more