I know this might be annoying but other posts didn't seem to solve my problem...
When i try to load my aircraft it says: "We had some troubles loading [building name] aircraft file".
I did use xml to change weapon properties and resize parts, but didn't use any mods and i'm on 1.12.
Also, there's no backup file on aircraft directory and i already tried reloading the game and the computer (Windows 10).
On all the lasts uses it was working fine, however i do notticed that some pilons were automatically removing their attachments every time i reloaded the aircraft.
I don't have any idea of what i did wrong, so any help is very welcome.