Hi all! Never done this before.
When I want to package my project, after I generate a unique metadata tag, it gives an Error because I supposedly have the files open on my computer or a work in progress folder in the same area I want to package.

Even when I deleted all of that, the only thing ending up in the folder is song.tmb. The game does this when I click on package, immediately giving me an error.

I then tried to put the necessary items manually in the folder, like bg.mp4/.png, song.ogg, but the system doesn't see them.

I looked up the guides, followed the instructions, but I can't get it to work.
I feel like there is probably something very obvious that I am missing, but I can not figure it out for the life of me.

Can anybody help?