Does it happen if Squeenix is the only addon you have loaded?
I'll check. /shame
Ok final edit: I tried with only squeenix loaded, it seems to have something to do with the alpha option, because after settign alpha too 100 the IF map loaded as normal, but at 70 it didn't load at all. Works at 90% but not 85%, 90, 95, 100 looks fine, the others make it go black when I zone into IF.