dplank.
I'm kind of killing two birds with one stone here.
I installed an airport card in this machine a while ago.
After visiting TS and catching your thread, started thinking if I've ever tried using airport for downloads.
So. I copied what you wrote on what and where.
Difference is I'm dial up.
Went to VersionTracker with Safari/10.2.6 and found a small freeware.
I have my download destinations assigned to a folder called D/L=downloads also.
Worked without a hitch the first time. Just to make sure, I d/ld a second time with no problem.
Took a
screenshot.
Come back and saw Kelly's link to what I was going to post plus the thought of trying without airport.
So I shut her down and did the download by way of internal modem.
No problem here.
You checked all the usual stuff like system preference >internet>webtab for assigned d/ld and Safaris prefs I'm sure or those others that you can download wouldn't be there.
Hope I helped some way any-who.
Anyways, gotta catch some zzzzzzz.
See Me.