I, like everyone else posting here, fell for this extension and lost all my app data.
I'm not sure if this extension is buggy or if we are simply too stupid to get it running but here is what I did:
forget (about all my app data as all apps seem to have lost their data)
I then opened a terminal, typed adk as instructed and am getting:
permission denied. Can't create /data/media/adk/logs/res_apks_verbose_log.txt: permission denied
typing su before adk does indeed give me a list of apps which seems to get longer every few minutes.
Maybe its still busy copying? I'll give it some more time. Not sure what's up though, are we supposed to wait for the ap to copy all app data over then do an initial restore? Or is it not correctly "linking" the apps to the new app data storage?
I did not immediately remove this extension as I thought to give it some time. I then rebooted and its now hanging at the boot screen saying: "Starting up ... please wait" - this section usually only takes a few seconds but I've been staring at this screen for minutes now. I'll give it 30 minutes, maybe it is still busy copying all my APKs and app data to the SD card? I mean I was already wondering how this can only need one simple reboot to be ready...
I'll update this thread if I have any new findings as the extension description sounds quite logical so maybe we're all doing something wrong