Animation and Rigging Tools: FAQ, Known Issues and Feature Roadmap

Hello all,
I pulled down the latest UE4 code 4.3.1, does this code for A.R.T. currently trump the code in the DropBox repository or is the DropBox code always newer?
My reason for asking is that I was having some interface issues, and read through everything I could find, and it seems the common answer is to pull down the DropBox code.
Upon doing so, I found that the files I pulled down from DropBox were dated sometime before the ones I pulled down in UE4 4.3.1… I didn’t know if the UE4 4.3.1 code got created upon installer request, or if it’s actually newer.
This is the first time I’ve ever dealt with UE, and A.R.T.
Please advise.