thank you for your help, now I have the correct version that I need. The problem was in the adobe creative cloud app for desktop. I've uninstalled and downloaded it again: now I can see the Edge 2014.
Now there is a new FAQ about Yosemite and CC: http://helpx.adobe.com/x-productkb/global/mac-os-yosemite-compatability.html
As you see (picture above),
i installed 2 versions (latest and 1.5), so i need to change default value on double click (picture below):
Thank you for your useful suggestions.