The first thing to check is to make sure Photoshop was closed during installation of the plug-in. If not, simply restart Photoshop. Once Photoshop is open, please go to Window > Extenstions > onOne

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This will open the onOne panel giving you access to your product. Just open an image in Photoshop and choose your plug-in from the onOne panel. The onOne panel is only available for the latest versions of our products running in Adobe Photoshop CS4 (Plug-in Suite 5, Genuine Fractals 6 Standard and Professional Edition, PhotoTools 2.5 Standard and Professional Edition, PhotoFrame 4.5 Standard and Professional Edition, PhotoTune 3, FocalPoint 2, and Mask Pro 4.1.7) .