Nullpointerexception When Writing To External Sd Card On Android

[Rnway]

I'm using Bittorrent sync on my Android phone.

 

While I am running 4.4.4, I'm running CyanogenMod which still allows apps to write to the SD card. I've verified this using several apps, including SyncThing.

 

However, when I attempt to sync to a folder on the SD card, or make a new folder on the SD card, I get the following exception

 

java.lang.NullPointerException at

com.bittorrent.sync.utils.FileUtils.isDirInExtSdCard(FileUtils.java:53) at

com.bittorrent.sync.ui.fragment.FileListFragment.checkPermissions(FileListFragment.java:347) at

com.bittorrent.sync.ui.fragment.FileListFragment.onOptionsItemSelected(FileListFragment.java:423) at

...

 

I've submitted a bug report using Android's report feature, but I figured I'd bring it up here as well.

 

Oddly enough, syncing to folders on the SD card works just fine on my tablet, which is also running 4.4.4 CyanogenMod.

 

 

[Rnway]

I've now tested on 3 different SD cards formatted as both FAT and exFAT, including the one that is working in my tablet, so I'm fairly certain it's not a problem with the SD card.

 

Correction: I assumed this problem was due to the SD card. I cannot currently put syncs in any folder other than the default. I get the same error every time.

Edited March 25, 2015 by Rnway

[Rnway]

Adding some more information:

 

I can't do anything with a file chooser dialog, including changing the default sync location. Sync works just fine, so long as I just hit "add folder" without ever trying to change where it syncs to.