I have never seen it.

Which program displays that error message?

(I almost don't dare to ask: First and only download or occured this more often than once?)


Desktop; i7-2600k, 8 GB mem., Win 10 Pro, BIAB 2017; RB 2017 - latest build
Laptop: i5-2410M, 4 GB mem, Win 10 Pro, BIAB 2017; RB 2017 - latest build