For those who are experiencing problems when trying to sync to "/Android/data/com.bittorrent.sync", I'd like to share the solution that fixed this for me:
I had a folder "eMagazines" on my SD-Card I used to sync to my PC before installing KitKat. After the installation it didn't work anymore. So I moved the folder to "/Android/data/com.bittorrent.sync/eMagazines", selected it as sync-target in BTSync, but still got an error about no being able to write (I used ES-Explorer to move the folder). This happened despite having the Tablet rooted and having installed SD-Fix.
I moved my magazines-Folder back to were it was before and used the "New Folder"-Function in BTSync to create a new folder "eMagazines" inside "/Android/data/com.bittorrent.sync" resulting in the exact same path as above, but working fine. I then moved the contents of my old eMagazines-Folder to the newly created one and it works like a charm.
I strongly suspect that the insufficient rights for the folder are somehow moved along with it, preventing the folder to be write-accessible for BTSync despite being in the right location if you move an existing folder.
This should also work on non-rooted devices without SD-Fix. In that case, I'd suggest to create the new folder as described and then connect the SD-Card to a PC to move the files from the old folder if you don't have an Android filemanager that has full access rights.
Btsync Can No Longer Sync To Ext Sd Card On Note 3, After Update Android 4.4.2.
in Sync Troubleshooting
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For those who are experiencing problems when trying to sync to "/Android/data/com.bittorrent.sync", I'd like to share the solution that fixed this for me:
I had a folder "eMagazines" on my SD-Card I used to sync to my PC before installing KitKat. After the installation it didn't work anymore. So I moved the folder to "/Android/data/com.bittorrent.sync/eMagazines", selected it as sync-target in BTSync, but still got an error about no being able to write (I used ES-Explorer to move the folder). This happened despite having the Tablet rooted and having installed SD-Fix.
I moved my magazines-Folder back to were it was before and used the "New Folder"-Function in BTSync to create a new folder "eMagazines" inside "/Android/data/com.bittorrent.sync" resulting in the exact same path as above, but working fine. I then moved the contents of my old eMagazines-Folder to the newly created one and it works like a charm.
I strongly suspect that the insufficient rights for the folder are somehow moved along with it, preventing the folder to be write-accessible for BTSync despite being in the right location if you move an existing folder.
This should also work on non-rooted devices without SD-Fix. In that case, I'd suggest to create the new folder as described and then connect the SD-Card to a PC to move the files from the old folder if you don't have an Android filemanager that has full access rights.