I never used the Libraries inside Photoshop CC and others CC's apps. The following error appears: "To use Creative Cloud Libraries, please sign in to Creative Cloud". I tried to sign out and sign in my account... but it didn't work!
I'm using Mac Os X Yosemite 10.10.1
Someone can help me please?
Also, Yosemite sometimes has problems, often related to "default" permissions needing to be changed
-one person's solution https://forums.adobe.com/thread/1689788