Fix problem creating a new text file on Nexus 5/Android 4.4.2

```
01-03 17:55:23.265: I/ActivityManager(753): START u0 {act=android.intent.action.EDIT dat=file://storage/emulated/0/Download/140103.txt typ=text/plain flg=0x30000000 cmp=com.dropbox.android/.activity.TextEditActivity bnds=[360,353][456,449]} from pid -1
01-03 17:55:23.275: I/ActivityManager(753): Start proc com.dropbox.android for activity com.dropbox.android/.activity.TextEditActivity: pid=25681 uid=10084 gids={50084, 3003, 1028, 1015}
01-03 17:55:23.275: I/SearchController(18052): #onHotwordDetectorStopped
01-03 17:55:23.285: I/MicrophoneInputStream(18052): mic_close
01-03 17:55:23.355: D/dalvikvm(18052): threadid=50: thread exiting, not yet detached (count=0)
01-03 17:55:23.355: D/dalvikvm(18052): threadid=55: thread exiting, not yet detached (count=0)
01-03 17:55:23.355: D/dalvikvm(18052): threadid=43: thread exiting, not yet detached (count=0)
01-03 17:55:23.355: I/com.dropbox.android.service.DropboxNetworkReceiver(25681): Setting receiver enabled: false
01-03 17:55:23.375: I/decoder(18052): INFO: recognition time wall: 4.10483 sec user: 0.84 sec sys: 0.04 sec 
01-03 17:55:23.375: D/dalvikvm(25681): Trying to load lib /data/app-lib/com.dropbox.android-1/libDbxFileObserver.so 0x425e1710
01-03 17:55:23.375: D/dalvikvm(25681): Added shared lib /data/app-lib/com.dropbox.android-1/libDbxFileObserver.so 0x425e1710
01-03 17:55:23.375: D/dalvikvm(25681): No JNI_OnLoad found in /data/app-lib/com.dropbox.android-1/libDbxFileObserver.so 0x425e1710, skipping init
01-03 17:55:23.395: D/dalvikvm(25681): GC_CONCURRENT freed 240K, 2% free 16908K/17176K, paused 1ms+2ms, total 17ms
01-03 17:55:23.415: I/com.dropbox.android.util.ae(25681): Watching file: /storage/emulated/0/Android/data/com.dropbox.android/files/scratch/d9e893bc
01-03 17:55:23.415: I/com.dropbox.android.util.ae(25681): Getting ready to upload: /storage/emulated/0/Android/data/com.dropbox.android/files/scratch/d9e893bc
01-03 17:55:23.425: I/com.dropbox.android.util.ae(25681): Watching file: /storage/emulated/0/Android/data/com.dropbox.android/files/scratch/29305cea
01-03 17:55:23.425: I/com.dropbox.android.util.ae(25681): Getting ready to upload: /storage/emulated/0/Android/data/com.dropbox.android/files/scratch/29305cea
01-03 17:55:23.425: I/com.dropbox.android.util.ae(25681): Watching file: /storage/emulated/0/Android/data/com.dropbox.android/files/scratch/9589eb86
01-03 17:55:23.425: I/com.dropbox.android.util.ae(25681): Getting ready to upload: /storage/emulated/0/Android/data/com.dropbox.android/files/scratch/9589eb86
01-03 17:55:23.425: I/com.dropbox.android.util.ae(25681): Watching file: /storage/emulated/0/Android/data/com.dropbox.android/files/scratch/40ec6812
01-03 17:55:23.425: I/com.dropbox.android.util.ae(25681): Getting ready to upload: /storage/emulated/0/Android/data/com.dropbox.android/files/scratch/40ec6812
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): Problem opening file: file://storage/4fa4b1d1/30/58f52ca8/cf0cec69
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): java.io.FileNotFoundException: No such file or directory
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.os.Parcel.openFileDescriptor(Native Method)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.os.ParcelFileDescriptor.openInternal(ParcelFileDescriptor.java:252)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.os.ParcelFileDescriptor.open(ParcelFileDescriptor.java:198)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:899)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.content.ContentResolver.openFileDescriptor(ContentResolver.java:761)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.content.ContentResolver.openFileDescriptor(ContentResolver.java:716)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at com.dropbox.android.activity.TextEditActivity.a(panda.py:372)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at com.dropbox.android.activity.TextEditActivity.f(panda.py:432)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at com.dropbox.android.activity.TextEditActivity.onCreate(panda.py:305)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.app.Activity.performCreate(Activity.java:5231)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.app.ActivityThread.access$800(ActivityThread.java:135)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.os.Handler.dispatchMessage(Handler.java:102)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.os.Looper.loop(Looper.java:136)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at android.app.ActivityThread.main(ActivityThread.java:5017)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at java.lang.reflect.Method.invokeNative(Native Method)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at java.lang.reflect.Method.invoke(Method.java:515)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
01-03 17:55:23.435: I/com.dropbox.android.activity.TextEditActivity(25681): 	at dalvik.system.NativeStart.main(Native Method)
```