Apparently one of my staff (he's learning to run his own site also) got to "tweaking" my permissions for guests thinking he was on his site.
The guest download ability has been switched back to what it was.
That's why I have had it as guests can download. I host a few files (like PIPP) that are direct download, but I would rather not have people just join to download a file but to participate on the site.
You should be able to download it now.

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