Ok so I was so happy for finishing my project, so having problem right know sure is just awful Here are the screens: Spoiler: Playtest (OK) Spoiler: Exporting (KO) (Translation of the error code: something like "Distribution package not created.") Even changing the platform, excluding unused files and encrypting doesn't seem to work (in any combination). I'm sorry I can't give more info I just have no idea which are relevant and which are not (I can send the directory if someone needs to test theirself). Edit: even exporting a new project is impossible (I just added some DLC to the NewData folder so I don't think that's important)! Thanks in advance!