I can confirm: same issue for Mac OSX - 10.9 Mavericks
Dennis Hagemann and Benjamin Fehr:
Thank you for your posts.
I am also able to replicate the issue under Mac OS X 10.8, 10.9, and Windows 7. I have forwarded the information to our Development and Testing departments for review.
It's no big deal. Take note that there seem to be no FM 13 resources on the FMI download-server yet since there's no update anyway.
Could be that this is on purpose when "check-update" routine doesn't find any content for query "FM13".
Best regards to the staff. I'm very happy that almost all FM12 issues seem to be resolved.
This has been fixed.
Bug list has been updated.