MSFS 2024 Unable to load IAH with Max 8 or Fenix (after BFU)

[macbrowndog]

I am having the same problem with default and 3rd Aircraft.

Regards,

[TheDavid737]

Umberto - can you take another look at this thread. The number of your impacted customers is increasing. Per your last suggestion, BATC has been ruled out and GSX has been confirmed to be involved somehow. If there is anything we can provide to assist please let us know.

[virtuali]

unless I'm mistaken the link you posted has only 4 posts and only 1 of them mentions BATC where they state "Not BATC either. Now Im getting full CTD at KIAH"

The post has been edited or removed after I posted its link! When I posted it, somebody said it was fixed by removing BATC and, since I already verified and posted in another thread KIAH works fine:

https://forums.flightsimulator.com/t/sim-freeze-ctd-at-kiah-gsx-issue/739399

I just assumed whoever wrote that by removing BATC the crash was gone, was correct. Of course, I'll check it again with the latest SU4 Beta.

[virtuali]

I tested it again now, with the latest MSFS 2024 SU4 Beta, using the inibuilds default A320 V2, started a flight on Gate A10, called GSX Pushback then taxied to Rwy 15L, stayed for 5 minutes on hold, than I took off and flew for 10-15 minutes in the area.

No CTDs.

I also opened the GSX menu a couple of times after take off (before reaching 10.000 ft after which GSX disables itself), and it showed all nearby airports as expected, indicating the Navdata has been read correctly.

Reading a couple of confirmation this happens also with KIAH not installed:

Further testing, I removed the FSDreamTeam‘s KIAH altogether and noticed I am still having the same issue unfortunately.

I also removed/disabled KIAH but still had the same crash.

Seems to indicate there's no issue with the airport, it's more something related to the KIAH area in general.

Now, since previous reports SEEMED to indicate this was caused by BATC, and BATC ALSO reads the Navdata using the Navdata API just like GSX does, it's possible that BOTH GSX and BATC are affected by the same problem with the Navdata in the KIAH area so, some users removing BATC and still getting a CTD, might be easily mislead "it wasn't BATC, so it must be GSX", but maybe the CTD might have happened just the same if you disabled GSX but kept BACT installed, because the cause is neither of the two apps: it's something in the Navdata in the KIAH area that would cause the sim to crash when queried.

As explained so many times, neither GSX nor BATC can cause the sim to crash directly, because they are both running as external .EXE. However, if they use Simconnect to call the Navdata API, a problem with it (which can happen BOTH using the default Navdata but also with 3rd party Navdata) MIGHT crash the sim, if the sim is not able to deal with the Simconnect request in a graceful manner.

This already happened before: crashes in tha Navdata API has been reported in the past and were fixed by Asobo in some cases, and by Navigraph in other cases (even if the real cause was the sim crashing just because there was a duplicate item).

So, the next question is: all of you affected, are maybe using Navigraph or another 3rd party Navdata ?

[BrianT58]

Thanks Umberto that's quite helpful. I can confirm that without BATC the problem still happens (I get a freeze rather than a CTD) but it is so irregular as to when it happens. I do have a Navigraph subscription which is kept up to date. Can you suggest anything we could try to either eliminate or point the finger in this direction? or is it just simply remove navigraph form the systme completly?

[Fornax]

Forget BATC! I wrote that thead, and it has been updated long time ago.

Fact is: GSX istalled = freeze at KIAH.
No GSX installed = no freeze.

Also tried FSRealistic on/off. BAtc on/off. Same: freeze as long as GSX is installed.

Yes, using Navigraph.

[virtuali]

Forget BATC! I wrote that thead, and it has been updated long time ago.

It seems you haven't read what I wrote. You might been initially MISLEAD it was BATC, likely because you tried removing it and it seemed to have stopped the crashes. So now, you are still being mislead "it's GSX", because you still have GSX but, as I've said in my previous post, if the REAL cause of the problem is that something in the Navdata in that area has a problem which would cause the sim to crash when queried using the standard Simconnect Navdata API, that BOTH GSX and BATC use, the only way to fix the crash would be removing BOTH.

Fact is: GSX istalled = freeze at KIAH.
No GSX installed = no freeze.

Yes, using Navigraph.

It doesn't seem you tried these combinations:

1) GSX NOT Installed, BATC Installed, Navigraph Installed

2) GSX NOT Installed, BATC Not Installed, Navigraph Installed

3) GSX Installed, Navigraph Not Installed

If you are getting a crash with case #1, but not with case #2, it means the Navdata "alone" is not a problem, but it becomes a problem when queried from Simconnect so, it's a simulator/Simconnect issue, since it affects both GSX and BATC.

If you are NOT getting a crash with case #3 (which is MY situation), it clearly proves GSX is not the problem, so back to explanation of case #1 and #2

Of course, I'm going to test again with Navigraph Navdata installed now.

[Fornax]

Yeah, when I get time I will try without NG data.
Edited above with BATC and/or FSRealistic on/off.
No difference: as long as GSX (and/or NG?) is installed = freeze.

Will update flightsim forum thread accordingly...

Edit - quick test before wife comes home.
Test #3: GSX, no Navigraph.

Uninstalled Navigraph data 2510. Uninstalled Fenix Navigraph package. No BATC. Ie 'only' GSX running. Full cold&dark startup Fenix gate E3. Couldn't import SB FPL (tells me NG was successfully uninstalled), so programmed it manually.
After startup, started taxing out for RWY15L. After 30sec = FREEZE. Sound still playing.

Test #2: Navigraph, no GSX.
Installed NG cycle + Fenix Package. No BATC. GSX unlinked.
Again: Fenix C&D E3. Could now import SB FPL (ie NG working). No GSX option in the menu (ie GSX unlinked/uninstalled successfully).
Starting up. Taxing out. Depart... NO FREEZE.

All points to GSX to me...

[TheDavid737]

It doesn't seem you tried these combinations:

1) GSX NOT Installed, BATC Installed, Navigraph Installed

2) GSX NOT Installed, BATC Not Installed, Navigraph Installed

3) GSX Installed, Navigraph Not Installed

If you are getting a crash with case #1, but not with case #2, it means the Navdata "alone" is not a problem, but it becomes a problem when queried from Simconnect so, it's a simulator/Simconnect issue, since it affects both GSX and BATC.

If you are NOT getting a crash with case #3 (which is MY situation), it clearly proves GSX is not the problem, so back to explanation of case #1 and #2

Of course, I'm going to test again with Navigraph Navdata installed now.

I tested these scenarios with the exception of BATC as I do not own it so cannot test with it installed. I removed everything including Navigraph and only had GSX installed and I can reproduce my issues.

If I try to start a flight at IAH with GSX running (default scenery or FSDT scenery) I get the freeze 90% of the time when trying to load the flight (This started around July so occurring in SU2 and SU3, I am not in the SU4 beta). If I can make it in, I get a freeze shortly after loading or if I interact with GSX (call for services or restart Couatl via GSX menu).

I am only getting CTDs in a scenario where I fly over the IAH area (within about 10 miles it seems). So if I start a flight at HOU, for example, take a northbound SID that takes me in close proximity to the IAH area, I get CTD.

All of these symptoms are no longer an issue when after disabling GSX (either unlink, or exiting Couatl via the taskbar while at the MSFS 2024 main menu before loading a flight). If I disable GSX, load into IAH, then restart it, I get a freeze.

So currently, if I am flying anywhere in the IAH area, or in or out of IAH, I am disabling GSX via the taskbar, and having no issue. I then restart Couatl after leaving the area. If IAH is my destination, I disable GSX before getting close. No issues once GSX disabled (of course other than not being to use GSX at the airport).

[funkyj4ever]

Just had a ctd approaching kiah with pmdg 777. Never had this before. Also had issues loading into kiah sometimes. I dont see any weird logs in gsx logs.

[debbert]

Umberto — what is the game plan to get this fixed?

[virtuali]

Umberto — what is the game plan to get this fixed?

As I said already, in order to "fix" something, I should be able to reproduce it first. Right now, I can't, even with Navigraph, GSX and BATC all together. I'm using the latest SU4 Beta, not sure if this might be a factor.

[debbert]

[

Umberto — what is the game plan to get this fixed?

As I said already, in order to "fix" something, I should be able to reproduce it first. Right now, I can't, even with Navigraph, GSX and BATC all together. I'm using the latest SU4 Beta, not sure if this might be a factor.

As I said already, is there something I can add such as logs or screen grabs, videos etc? I’m still widely available to schedule a screen share or discord call. “TheDavid” is also available to join a call as well to help get this resolved as soon as possible.

[TheDavid737]

Umberto — what is the game plan to get this fixed?

As I said already, in order to "fix" something, I should be able to reproduce it first. Right now, I can't, even with Navigraph, GSX and BATC all together. I'm using the latest SU4 Beta, not sure if this might be a factor.

As I said already, I am happy to meet or provide anything you need to assist troubleshooting this issue. If there is any kind of logging from event viewer, windows, GSX, FS2024, anything at all, I am happy to assist. I just need some direction. It is most unfortunate this seems to only be impacting customers at random. As stated, this started on my machine around the time that PIGS and GSX Livery Manager was implemented. I am not sure if that is related or not but maybe something in that update or a subsequent one does not agree with the IAH area for some users? I am using the livery manager to omit any non US liveries to reduce the number of sim objects.

[debbert]

Umberto — what’s the plan of action going forward? Let us know please.