I suspect you have AHP installed in two locations and the wrong one is loading.
How are you starting AHP, from a desktop short cut or from the AHP folder?
SOMETHING FOR EVERYONE TO WATCH FOR!!
O.M.G.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Windows 10!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Windows 10 updates all the time. Some recent one MOVED and copied some of my often used files from normal program files directory to a temp directory AND IS RUNNING FROM THERE!
I had this happen a year ago when they decided my desktop was no longer good enough! No, they had to MOVE it to their cloud based ONEDRIVE!! But that would be too simple, so they only moved SOME OF IT!! So now, if I try to find something on my desktop, I have to search both the normal desktop folder under users, AND the desktop folder under ONEDRIVE! So now they arae beginning similar tricks with program files!
My clue was wondering where my 2018 .ahx saves went as they were no longer in the program directory... So I used my wonderful 'Everything' (
http://www.voidtools.com/) search tool and looked for .ahx and 2018 and found it!
Well, so far adding ahp_plugin.xml here did not solve it, but I suspect I am on the right track...
Folks beware, it may happen to you with some soon to come windows 10 update!
Here is the contents and location of this pseudo program file directory: