Airdroid and SD card on KitKat

I would like to try out the test version I have a Galaxy S 5

Is there any fix for this problem for phones that r not rooted.. I have a note 2 nd is there any ways to get back to the earlier version samsung provided.. plz help

I would like to try out the test version I have a Galaxy S 4

I downloaded Airdroid yesterday and have the same problem described above. Is the problem solved or have I done something wrong?
I'm using Samsung Galaxy Tab 4, by the way