Hi Ice,
I wonder if you are confusing free and ad-free. (They could definitely have worded the 2 versions better).

The version which is free for download is exactly that. It is free, but contains ads/banners for boonex etc.
The Ad-free version is ordered and paid for, not simply downloaded.

Likewise there are also 2 versions of Ray (free and ad-free). Same applies again.
BUT it is possible that the coding in that patch referred the ray to the paid version. Thus, the hotfix listed in this see more blog post will alter those files to work with the free version instead of the paid one.

Hope that helps, or at the very least highlights the issues of having the word 'free' in the name of both versions.

All the best