Hello, I have an iMac with Yosemite (in French).
Where to copy the images?
I suspect that you have problems to find the location because you are using the version from the Mac App Store.
I've updated the page to also provide instructions for the Mac App Store version:http://www.coollector.com/images.html
On a Mac, the location is different whether you have the Mac App Store version or not.
If you're using the version from our website, the images must be placed inside
"~/Library/Application Support/Coollector Movie Database/Images/MoviesDpt/"
If you're using the Mac App Store version, Sandboxing makes it a bit more complex...
"~/Library/Containers/com.Coollector.CoollectorMovieDatabase/Data/Library/Application Support/Coollector Movie Database/Images/MoviesDpt/"
Starting with OS X Lion, the folder "~/Library/" is now hidden.
To find it, you'll have to use the "Go" menu of the Finder.
At first, the "Go" menu doesn't list the "~/Library/" folder,
but holding down the option key will make it appear.