YOU CAN SEE THAT THE STATEMENTS FOR AI CARRIERS ARE MISSING IN THE NEW EXE.DLL FILE. Can you fix your next version of the installer to check/correct for this?
Sorry, but this is not what happened.
I've tested it with the EXE.XML files
YOU sent me some days ago and, the EXE.XML created by AICarriers, the one that YOU named "EXE.XML before JFK", didn't included the XML header! The first line that specifies the version and the encoding.
THIS, and ONLY THIS was the problem and, of course, wasn't caused by our installer. If the XML HAD a correct header, it WORKED with AICarriers installer as well
SO, THIS IS DEFINITIVE EVIDENCE that this happens consistently; Now does it happen to your installation of AICarriers or other statement? Can you fix your installers to resolve this in the next version(s) of XPOI as well as KJFK?
No, it's not the "definitive evidence", because it didn't happened here. NOT with the files as you posted NOW (which have an header, unless you manuall fix it yourself before posting it). What DID happen, exactly as I've said before and in all previous messages, is that, if the XML was ALREADY WRONG ( = missing the header, in this case), it was considered to be corrupted and replaced with a new one.
So, as usual, the installer has now been improved AGAIN to cover ANOTHER case of ANOTHER product which creates a wrong XML file. Our installer is becoming more and more a "fixer" for other product's fault because NOW, is able to:
1) Fix the Unix-style EOL created by Wilco
2) Fix the missing EOL created by AICarriers
3) Fix the XML with a missing XML header
I think we might consider selling the installer as a stand-alone product, considering all the fixing it's now able to do, to repear damaged XML files...
BOTH installers, for JFK and XPOI are NOW "fixed", since this morning, being now able to repeair even this new kind of already existing corruptions.
3. Next, You are using an OLDER (177.98) Nvidia Graphic Driver; this is the latest version for 32-bit driver (below) and I'm using the 64-bit version so, there might be differences. 
It might older, but it works.
Would you be willing to test KJFK with this 32-bit version on your systems to see if you have the same results with the MISSING TAXIWAY SIGNS and "Exit FSX from the Flight CTD" ?
Yes, but I'm sure it will work, because I upgraded all the WHQL drivers that were released during the 5 months JFK was in developement and, of course, never had such behaviour. Kappa, which made all the textures, use Vista 64 and GTX8800, he doesn't have it either...
Finally, Please lets not debate these issues anymore; This is just my report; maybe no one else has this but, I get it on all 3 systems; so, to me, this is a FACT.
I'm sorry, but as long as I can't reproduce it, the only way I have to understand if there's a problem in the scenery, is to see if anyone else has reported it. And, nobody else has, and THIS is a fact as well, which is of course more statistically relevant, because we had something like 30.000 downloads of JFK so far...