It does not happen with Wilco planes. I understand when you say: so it is a PMDG issue. I was already in the PMDG forum to discuss the topic and they say: if all other (also FSDT) airports are fine, then it is a FSDT problem with Zurich.
Their explanation is wrong, for this reason:
Our sceneries don't use only the BGL file format, but we do a lot using Simconnect. Which means, with this reagards, our sceneries are just just "sceneries", but they might be considered just like any other addon that uses Simconnect.
So, just to give an example, if you had an issue with, let's say UT2 or FSUIPC, that didn't worked with the PMDG airplanes ONLY, would have you accepted an explanation like "all the other utilities are working", if the ONLY airplanes that had issues where the PMDG ones ? Of course not, it would be clearly something thay had to fix.
We had an issue with Audio Environment, and we fixed as soon as it was reported.
What is interesting is that Zurich, of all our airports, is the one that is made in more "standard" way, compared to the others. Since you said yourself other FSDT airports are not affected by PMDG airplanes, this shouldn't really happen. However, the buildings creation method, is the ONLY thing that is exactly the same across all our sceneries.
So both of you play the ball to each other and the buyer is the victim and stands aside. Anyway, if PMDG brings out the 737, I will check for sure if it works with Zurich, otherwise it is not bought by me.
There's a big difference here: we do offer Trial versions JUST to give users the chance to test what they are buying from us, using THEIR own preferred combination of other addons. They didn't.
There are lot of posts, about missing buildings and OOM's while approaching Zurich (eg Peterle's post, posted at Jan 25th 2010; please check it again and check your answer about FSX default traffic).
As I've said already, "missing buildings" are ALWAYS coming with "missing menus", and are ALWAYS fixed when the missing menu issue is solved, because they are caused by external factors that prevent our software to run in the first place, hence the missing menus.
THis doesn't have ANYTHING to do with YOUR problem, which is missing buildings, with both visible menus BUT ONLY WITH PMDG. It's entirerly different, and it HAS been reported by just a couple of people.
That message from Peterle didn't prove anything, other than he had an OOM message at Zurich, but nothing there indicates is caused by Zurich. As we said, many times already, if you are already short on memory while flying, loading ANY big airport might cause OOM, without this being the scenery's fault.
Not right to say, there are only 2 reports. Urs Wildermuth wrote already about the MD11 at Zurich a while ago btw.
I repeat and confirm that there are only 2 report. 3 if you add Urs ? But what does it change ? Since the issue is the PMDG airplanes, I would expect even more reports. Fact there are so few, indicates than ON TOP of being caused by PMDG airplane, it will probably require some other combination of installed addons, otherwise it would have been more common.
For example, this video shows an approach into FSX Zurich with the PMDG MD-11
Another one:
So, it's clear that FSDT Zurich + PMDG MD-11 usually work together, which just confirms what I was saying all alone: if they didn't, we would have had way more reports. It's probably Zurich+PMDG+"something else" that is causing your problem.