This was while testing notifications with lots of new messages. When I go into the same group after the crash, it doesn't crash again. This might suggest some concurrency issue. ``` 08-01 12:34:40.882 E/ACRA: ACRA caught a NullPointerException for org.briarproject.briar.beta java.lang.NullPointerException at org.briarproject.briar.client.MessageTreeImpl.parseNode(MessageTreeImpl.java:70) at org.briarproject.briar.client.MessageTreeImpl.add(MessageTreeImpl.java:48) at org.briarproject.briar.client.MessageTreeImpl.add(MessageTreeImpl.java:55) at org.briarproject.briar.android.threaded.NestedTreeList.add(NestedTreeList.java:28) at org.briarproject.briar.android.threaded.ThreadItemAdapter.add(ThreadItemAdapter.java:88) at org.briarproject.briar.android.threaded.ThreadListActivity.addItem(ThreadListActivity.java:405) at org.briarproject.briar.android.threaded.ThreadListActivity$9.onResultUi(ThreadListActivity.java:388) at org.briarproject.briar.android.threaded.ThreadListActivity$9.onResultUi(ThreadListActivity.java:385) at org.briarproject.briar.android.controller.handler.UiResultExceptionHandler$1.run(UiResultExceptionHandler.java:24) at org.briarproject.briar.android.activity.BaseActivity$1.run(BaseActivity.java:140) ```