I'm still running 10.7 on my personal notebook. I first have access to an actual Yosemite Mac on monday.
So if problem hasn't solved itself until then, I will see if it depends on the actual OS version and see what can be done.
I'm also going to upgrade my mac to SSD HD and actual OS next days, but use my own webspace for upload pictures via FTP and inserting them into posts using the URL .
____________________ modelling in 1:22.5 on 32mm and 16.5mm track
Actual project: 7/8" scale on 45 mm track