Hi! I just checked this item and there are no problems with MOV file. What you mean when say “corrupt and unusable”? About AE file: it has no AE file because it is not AE template, it is video file in motion graphics category.

.mov can’t play file unsupported or corrupt 0xc10100be

go to https://videohive.net/downloads and try download it again. Maybe problem is that was you had download not full archive.