The issue isn't so much for me as it is for a friend.
its the archaeology helper add on. in the addon's list it has the "by biasha" next to it. i've found it to come in pretty handy. I use it. and i convinced my friend to try it now she likes it so much she doesn't like doing any digging unless she has it. And that's the problem.
For some reason with the last patch (rise of the zandalari) it just stopped working. it was working fine till we tried to update addons. got all the important stuff like dbm and so on, downloaded, and it all works fine. we come to the archaeology helper: we re downloaded it even though it looked like it hasn't been updated in a while. mine works perfectly fine. for some reason her's doesn't work what so ever. she put the files in the addons folder but it doesn't appear in the addon's list at all. she even deleted the folder 100% then re downloaded it and still nothing. the Gathermate2 and gathermate2_data that it seems to work along with works but the archaeology helper addon is a no go.
i've been scanning the forums with no luck for a while now. found other issues people have had but most were older posts of which i assume have been resolved. she seems to really like this one so it might take some convincing if she needs to find a new addon. which shouldn't be necessary anyway. Mine works fine. Any and all help would be appreciated.