This has happened multiple times: at the gate, taxing and in the air. This started happening after I updated to v1.0.2.

This time I had just started the engines and was preparing to taxi. I pressed the checklist button and controls froze. 

This was the error:

WASM: Exception c0000005 in gauge EFIS in module vfs://inibuilds-aircraft-a350/SimObjects/Airplanes/inibuilds-aircraft-a350-900/panel/inibuilds-A350.wasm

A350-900

FS2020

NAVIGRAPH

Ryzen 7 7800x3D, AMD 7900XT, 32GB RAM 

 

Hi @Sirraj

Did you have your TCAS/XPDR on at the time with EFIS on TRAF or ID mode? We've identified a WASM crash related certain type of traffic data when displayed on ND and team is working on a fix.

Its likely the cause for your crash but please let us know.

Thanks!

Thank you for the response. I always have TRAF mode enabled on the EFIS, I'll try leaving it off. By the way, I love flying your A350, I fly FLYBYWIRE, IFLY, PMDG and FENIX airliners but the A350 is by far my favorite. The WASM freezes are frustrating, I'm looking forward to the fixes.

Thank You,

Sirraj

 

I tried a flight from cold and dark and I did not enable TRAF or ID mode on the EFIS (TCAS/XPDR - on). I completed the entire flight without any problems at all. Leaving TRAF/ID off seemed to solve the WASM crashing problem for me. 

Thank you!

Another WASM crash for me, haven't completed the last three flights because of it, TCAS was on ID on the EFIS display.

Please fix this is, I cant enjoy this aircraft at all if it keeps crashing this way.

1 hour ago, Sirraj said:

Leaving TRAF/ID off seemed to solve the WASM crashing problem for me. 

Thanks for confirming. Fix is in place for this one, just going through testers as we speak.

22 minutes ago, TheFrozenBiscuit said:

Please fix this is, I cant enjoy this aircraft at all if it keeps crashing this way.

Same as above, we are committed to resolve these instances of WASM crashes and improve stability for all. The team is working tirelessly to that end and reports like these help in this effort.

Thanks for your time and patience meanwhile!

I had two more WASM crashes today. I had both TRAF and ID disabled, but transponder on with TA/RA enabled. Both times happened shortly after take off.

A350-900

FS2020

NAVIGRAPH

Ryzen 7 7800x3D, AMD 7900XT, 32GB RAM 

Here are the errors from the second WASM crash:

WASM: Error getting memory in module noolaero-vdgs-klax_generic.wasm.

WASM: Error getting memory in module noolaero-vdgs-kphl_generic.wasm.

[Coherent GT] Failed to locate file vfs:///html_UI/Pages/VCockpit/Core/WasmGaugeLiveView_0
[Coherent GT] Failed to locate file vfs:///html_UI/Pages/VCockpit/Core/WasmGaugeLiveView_1
WASM: Exception c0000005 in gauge MFD in module vfs://inibuilds-aircraft-a350/SimObjects/Airplanes/inibuilds-aircraft-a350-900/panel/inibuilds-A350.wasm

Thank You

 

Hi @Sirraj

Thanks for the report. 

8 hours ago, Sirraj said:

WASM: Exception c0000005 in gauge MFD in module vfs://inibuilds-aircraft-a350/SimObjects/Airplanes/inibuilds-aircraft-a350-900/panel/inibuilds-A350.wasm

Only this one is the wasm crash. In case it happens again, can you please share a screenshot of your screen showing all the displays, for some additional clues as to what being shown on the MFD may have caused a crash.

Thanks!

A little more information. I completed two flights without any problems at all.  I had both TRAF and ID disabled transponder in standby. 

I just completed a complete flight using v1.0.3 with TCAS set to TA/RA and TRAF enabled. No problems at all.

Thank You!

 

3 minutes ago, Sirraj said:

I just completed a complete flight using v1.0.3 with TCAS set to TA/RA and TRAF enabled. No problems at all.

Thank You!

 

Thank you for letting us know!

never happened to me until now, msfs 2024

On 10/25/2025 at 8:04 PM, bluair said:

never happened to me until now, msfs 2024

same. had this on my flight FRA-CPT after about 8:40 hrs
 

I just got it myself. This was a flight from EDDF-KSFO. When I woke this morning, the aircraft was sitting on the ground in Northern CAnada with the error displayed. I only had TA and TRAF enabled. This is MSFS2024 SU4

Edited November 1, 2025Nov 1 by tkemp66

I've got another one.
Changing, while in setting up flight in LEMD, ATC gives me 36L while I was planning 32L. Changing from 32L to 36L did the crash

Just had my first WASM crash in version 1.2.4

Flight DIAP-GUCY, when selecting Arrival into GUCY, selected Runway 24, RNP 24, GAGUD transition. The moment I clicked on GAGUD, I got the WASM crash.