Warning W14016 Cover not specified

After installing 1.8.6.0 yesterday I got this message when generating a MOBI on Windows 7:
Warning W14016 Cover not specified

Scrivener still generates the mobi even with the error, but my cover isn’t included in the final mobi file. Frustrating.

Is it something with the cover (I recently imported a new cover), or something with this latest update?

Thanks!

Yesterday we released Scrivener for Windows v1.8.6.0. Unfortunately it had the bug that you experienced. Shortly after we uploaded a hotfix release, but meanwhile you must have already installed the problematic version. Please, download again Scrivener from the web site here, install it over your current version and try again. Please, let us know if this fixes the problem.