OOM ... again but new nonetheless

Hello,I was free of those OOM's untill I installed KIAD from BluePrint.All of a sudden, when flying into KIAD, I get the message that Fs9 ran out of memory.I checked for the usual faults (multiple Afcad's, too much AI) but I am quite sure that those are not causing the problem.At least I think I am quite sure.There is the new afcad, installed with the airport, so I removed the Afcad file that came with the AI software.AI traffic was only 50 % and although I use only 35% most of the time, the airport seemed so empty that I put the slider on 50 % to give me some idea of a busy airport.Has anybody had the same experience with KIAD from BluePrint?Has anybody suggestions of possible other causes?All help appreciated.Luc BrusselmansBelgiumby the way, I have 4 gb RAM installed so I guess that should be enouhgh...