Shouldn't be a problem from what I've seen, if you followed the GAF Wiki. 236 is the IOS that should be used when installing wads from what I remember.
I don't get 236 as an option when I try to install. These are what I have available (according to WAD manager v1.7): 4, 9-17, 20-22, 28, 30, 31, 33-38, 40, 41, 43, 45, 46, 48, 50-53, 55-58, 60, 61, 70, 80, 222, 223, 247-250, 254.
I tried installing using 249, 250 and 254 I think, but then it just didn't want to complete the installation.
I already have Configurable USB Loader , gecko, homebrew browser and d2x cIOS installer (guess I don't need this last one?) on the SD-card, along with Wad Manager 1.7 and NeoGamma (not yet opened as it's the next step in installing DML).
Edit: Ofcourse, I hadn't installed the IOS236 Installer ... d'oh! Seems to be working now. I'll update later to share my stupidity
Edit2: Works like a charm now, thanks for the tip regarding IOS236 fernoca, I can't seem to remember to have read it anywhere, must have crossed my eyes somewhere.