'Thumbnail not available' on skin upload

[Comentarinformal]

I'll need to look into this. For some reason, the uploader is having problems saving the thumbnails to their correct paths on the server, making the whole process fail.

Editing the skin and uploading the thumbnail then works, though.

I may just do a copypasta.

[Comentarinformal]

Fixed, wrong path at the wrong moment (didn't have sid folder to move to)