Could you post the logs from when you attempt to package? You should be able to find them in your project’s directory under Saved / Logs. This should give most of the information, if not all, needed to diagnose the problem you’re experiencing.
We haven’t heard from you in a while, Sinnelius. Are you still experiencing these issues? If so, could you provide the information I requested? We need more information from you to progress with this issue.
In the meantime I’ll be marking this post as resolved for tracking purposes. Whenever you’re available, please leave a comment and the post will reopen.
From your log it seems that there is an unidentified character in one of your folder names that may be causing the editor to have some issues in following the file path correctly. Please try removing the character from “Unreal Project�s” that is coming up as a ?.