If Photoshop is selected as the default editor for textures, when editing a texture with Photoshop not started, it will ask for a license reactivation, as if it were used on a different PC. After inserting the correct Adobe id and password, Photoshop returned an error, as if it couldn't connect to the internet to verify the activation.

This can be solved by having Photoshop already started. This way, CC3 can send the texture to be edited normally, but it would be nice if CC3 could start Photoshop itself.