Just a quick note to give a big thank you to everyone on the forums who has been so helpful with my (and others) Yosemite Logos issues.
While the going has been frustrating it is really awesome to have so many dedicated Logos users who are willing to help and give advice and so on.
You guys are the best!
And yes I finally have a working Logos 6 installation, thanks to the suggestion to extract the urls for the outstanding resources directly from Updates.db. I wish the Scan resources feature would give some indication of what its doing or that it is working at all, but it seems to have worked correctly 
Again, thanks a bunch. I look forward to many hours of fruitful study. (Now I just need to buy more journals
)