Interesting both, but not sure those apply. 8 gigs of mem, large hard drive, Not that many sceneries or aircraft. I5 motherboard. never had ADE do this. ADE upper right hand corner says test. I use version 165 prokey.  Airport Studio has been its cranky self for a couple of years... just annoying but it works well otherwise.
Other than this I recently had this: make a vehicle spot... draw vehicle path to the airplane spots. I then back in FSX get onto a parking spot and call for fuel (shift+f) I get the message.... truck takes off - gets half way to my plane and stops. Once I did this twice and the second time it worked.
Later went to each spot and called for fuel and/or allowed an ai to get fuel ---- they all worked... even though  back in ADE fault finder says the path is not properly connected to the rest of the airport. IT IS!!! 
 
However...... SAME airfield.... other side I have 4 parking spots all connected correctly. every other one works yet ADE says ai are connected right!
Another.... (my dumb mistake here) could not get my traffic file to work... finally found I had drawn a taxiway line instead of the black rwy line!!! bwahahah! Stared at that for days finally a friend pointed that out. Went back and corrected a few airports I did this to All corrected EXCEPT ONE - it would not change to black even if I deleted the lines and redid them.
  I had to use Airport Studio to do it to that one airport and it worked and stayed that way. Odd!!! 
Pertinent info?............. I am doing about 17 airfields for the fellows I fly with. Each is supposed to be a retirement resort for each member. I have ALL  of theses in one scenery folder. I have about 8 areas to go yet. All in Alaska, each by a body of water........... doing a lot of sloped polys here and there!!! working out fine. 
   Anyway- all traffic files ok now... get fuel here and there act up. ADE seems to freeze.
I think I will go to a totally different scenery I have had no trouble with and see if ADE acts up there. If not then it's the area I am in. I've seen stuff like that before. Maybe I am just not  holding my tongue quite right? 

 Bob