Und gleich noch eins hinterher:
[28DEC19] Build 2.91.0049 for NGXu users is available - please read
Yesterday, 21:20
Captains,
So this is unusual- but does prove the value of our ability to push micro-updates quickly.
We started seeing some unusual traffic in the NGXu forum and at PMDG Tech Support indicating that after updating to Build 2.91.0046, some users were experiencing an issue in which NGXu would fail to run properly when selected. It wasn't all users- just a small number- but it was clear something was amiss.
Chris Makris put the word out to the dev team, so we collected this morning to see if we couldn't sort it out.
With the help of a few customers who were able to give us log files, addon installation lists and a bunch of other data, we were able to nail this down to a REALLY peculiar situation being triggered by a third party add-on developer who apparently is sending out an EVENT_SIM_STOP message via simconnect during scenery initialization. This was being picked up by the methods we use to help NGXu determine which airplane body-type has been selected by the user, as well as to connect to PMDG Global Flight Operations, and since the event message is telling the sim "we are shutting down" the NGXu would obey the command and shut down.
This message has been out there getting fired off for some time, but changes we made this week in preparation to begin testing the 600/700, along with Global Flight Operations were not protected from a "sim shutdown" message that reasonably should never be anticipated during sim initialization unless the user was actually shutting the sim down.
So- the NGXu was doing what it was told. The question becomes "why would a scenery developer send an EVENT_SIM_SHUTDOWN message during initialization?
That part of the investigation continues... (We aren't certain it is scenery itself, or an applet that runs animations in the scenery, or a 3rd party process the scenery developer is using... but we are searching...)
In the mean time- we pushed an update to protect NGXu from this unwanted interloper. So if it has been a problem- simply grab latest via OC2 and you should be fine.
Sorry for the hiccup- but I do want to thank the team for jumping on this and researching it to a conclusion on the saturday of a holiday weekend.
Robert S. Randazzo 
PMDG Simulations
http://www.pmdg.com
mfg Kai