OOPS! AN ERROR HAS OCCURRED. No download files are available

[john_mcclenahan]

See for example this related post:

Errors downloading from 3D Warehouse

Hi, Over the last 3 days I encounter errors when trying to download models from the 3D warehouse. The message says:" no download files available", after the model was found and previewed in the warehouse. Some models can be downloaded, but most not. I am a Pro user already for more than 5 years. This is the first time I have these download difficulties. Examples of files that do not download “Be pure rodeo bank”, “oven (flames007)”, “artifort F510”. I use MacBook Pro, MacOS High Sierra (10.13.6)…

It’s a result of a change in the Warehouse. The warehouse only supports the current and two previous versions of SU.

You could upgrade to a later version of SU.