Photoshop CC now supports the Ultimaker 2 printer as part of it’s local printer support. The Ultimaker 2 profile can be downloaded from the the link marked in green below.
Once the profile has been downloaded, just unzip the file
Once the profile and the 3D model is loaded, then choose the 3D Print settings from the 3D menu and select Local / Ultimaker 2. To start the Photoshop 3D Printer pipeline, click the button marked in green.