What kind of troubles are you having?
1) Check /hoai and Alt-T
2) Remember to relog every time you change something in MirAI.
3) Make you enter in monster's ID and name, as well as how you want your homun to react (behaviour/skill/level)
also, might not be the case, but make sure the content of MirAI is in your aRO folder (User_AI folder)
I did all of those.
I think you need to be logged out when you're doing the changes. In other words Don't change and then relog.
Log out first then do the changes.
It may not be needed to do it this way but it's always a good idea to make sure no program is using the files you want to write to (meaning the aRO client in this case).
Also make sure the control panel is in the proper folder.
I think the changes you are trying to make should work but I know that some things are broken in mirAI.
For instance I had to use another AI to get my vanil to shoot spells from a distance rather than rushing up to melee range before casting.
The monster priority should work if you use the proper monster IDs from ratemyserver.net (atleast it worked for me).
I've tried changing the program without animus running and when I went back in my homunclous acted using the old settings instead of the new ones I tried to place. The control panel is in the correct folder.
the main problem is when I try and make changes to the AI using the control panel it keeps the default Mir settings. I guess I mean it does this:(http://i224.photobucket.com/albums/dd204/cmbrowning/whatitdoes.png)
when I want it to do this:(http://i224.photobucket.com/albums/dd204/cmbrowning/Whatitshoulddo.png)
I highlighted the address, but I'm fairly certain it's in the correct folder.