Nova Launcher Beta has since been updated adding Android L Support, Battery Percent for KitKat is working great, and now we’ve even got a fully functioning Titanium Backup (download the latest test 2 build here). Everything’s was working great – except Dropbox.
How To Fix Dropbox on Android L Developer Preview
In Root Explorer navigate to: sdcard/Android/data/ and delete the com.dropbox.android folder.
Next go to your device’s root directory (/) and go to: /data/system/ and delete the dropbox folder.
Just for safe keeping I booted into recovery and to wipe dalvik and cache, rebooted, reinstalled Dropbox and it’s been working smoothly ever since.
Note: In case you don’t have root access and still want easy access to your Dropbox files there’s a free version of Root Explorer in the Play Store. You can add a Dropbox tab within the file manager and access your file’s this way as well.