Hi,
I have the same problem in MSFS2024... A350-900 was stable until v.1.0.4 and I had numerous flights without a problem. Today I installed the latest update after deleting the ...\WASM\MSFS2024\inibuilds-aircraft-a350 folder (and cache and sceneryindexes) and tried A350-1000 for the first time. At iniBuilds EGLL an instant crash when I started a flight. I cleaned WASM folder once again and succeded in loading at EGLL. I did nothing, just sat there for a while then quit the sim.
Now the A350-1000 will not load at all. As soon as I start a flight, I experience a CTD. I cleaned the WASM folder and the rest, tried to load EDDF. It took a long time to load - rebuilding the WASM folder, obviously, but then CTD again. Same at EGLL.
Jure
EDIT: if it helps, I managed to load the -900 at LEMD, but CTDed at iniBuilds EGLL.