I am having problems with Lightroom v5.6 whereby, the majority of the time, I get blank area of the screen where the map should appear. This is happening on both my iMac and MacBook Pro both of which are running OS X v10.10 (Yosemite). The problem has only appeared since updating to Yosemite.
I have no problem accessing Google maps via the web browser and the maps are working okay within iPhoto.
When the map does appear in Lightroom I find as soon as I exist the software and reload it the map is no longer visible.
Thank you for your help.
This is a known bug in LR with Yosemite, acknowledged by Adobe in their official feedback forum:
Please add your opinion and vote to that topic -- any update will most likely be posted there first.