when I try to run the sql I get this
MySQL said: Documentation
#1062 - Duplicate entry 'banner_source' for key 1
What I would try is go into your database and check your phpbb_config table to see if for some reason there's a 'banner_source' already in the table. If there is, then just delete the row and try the SQL again. This has happened to me before installing MODs in the past, not sure how and I don't remember details since it was years ago, but doing that worked. So I'd give that a try, tell me how it works out.
Does this mod work if the Categories Hierarchy (sub-forums) mod is installed ?
I don't use that MOD, but I have been to forums that do, and seeing them in action, I don't see any reason why my MOD wouldn't work with it. So I say give it a try, and if for some reason it doesn't work, I'll take a look at that MOD and see what I can do for you.
As for everyone else, my best guess based on what's being said is that there's something wrong with your database. Make sure that the values show up in phpbb_config, and if they don't, then enter them manually and everything should work just fine.