Mine won't even start in 2024. Takes forever to get to start flight screen then comes up with OIS error on the EFB then freezes. I have uninstalled 5 times, cleared the WASM and deleted every file I can find for A350 before the latest reinstall, but still exactly the same. It seems to work in 2020, but the whole purpose of the purchase was to have a decent aircraft in 2024. Not happy. I have wasted an awful lot of time with this and am considering asking for a refund unless someone can come up with a fix.