Thanks @kzhao.

I don't have curl installed, but using wget the test works - a snapshot file containing data is created

Since the first asset (PH) did not return an error, I tried putting a different asset first. The first asset again did not return an error, but all the others returned "forbidden", as before. So, something goes wrong in the processing of the 1st asset.

The LogLevel=6 shows the first asset's data is in fact returned, but I looked a little closer and see that no PH file was created, indicating an error occurs that is not being reported.

It will take a while longer to download, install, and try 2.35 or 2.40...

Thanks.