After last update of Photoshop CC 2017 release, few weeks ago, nik collection does not work well anymore, actually none of the programs from nik is working.
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Adobe Photoshop's extensible architecture means the program acts as a host for add-ons and filters, third-party plugins that you install on top of the software itself. Some of these plugins add capabilities that Photoshop itself doesn't provide, while others expand upon the function of filter types that Photoshop includes. When your business depends on access to a broad range of effects, or the speed of dedicated plugins that master a production workflow, add and manage these resources to gain the fullest benefit from your Photoshop installation. Install your plugin following its manufacturer's directions. Some third-party Photoshop add-ons require you to enter their serial or registration numbers during the installation process, whereas others ask you to authorize their software the first time you attempt to use it. Donationware plugins - free software that requests a small payment if you use the product - may display a 'nag screen' unless and until you register and pay.
Some plugins simply require that you drag and drop their files into your Photoshop installation. Apply your plugin to a Smart Object so it becomes a nondestructive Smart Filter. You can turn an entire file, a group of layers or an individual layer into a Smart Object. Open the 'File' menu and choose 'Open as Smart Object' to treat a full document as one Smart Object. Select one or more layers in the Layers panel, open the 'Layer' menu, locate its 'Smart Object' submenu and choose 'Convert to Smart Object' to create a Smart Object from part of the layer content in a file. When you add PDF files or content from Adobe Illustrator, your content automatically becomes a Smart Object.
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To edit the results of a Smart Filter, double-click its entry in the Layers panel and change its settings. Access compatible third-party plugins installed under another application or an older version of Photoshop. Open the 'Edit' menu on Windows or the 'Photoshop' menu on a Mac, locate its 'Preferences' submenu and choose 'Plug-ins.' Activate the 'Additional Plug-ins Folder' check box and navigate to the location of your software. Select the folder that contains your plugins and click on the 'OK' button - the 'Choose' button on the Mac - to select it. Avoid selecting the main 'Plug-ins' folder from a prior version of Photoshop, however, because this will force your current version to load older duplicates of built-in plugins, which may cause problems in Photoshop itself. Tips.
Keep a unified list of all your third-party plugins and their serial or registration numbers so you can reinstall them quickly. To create interesting image treatments, experiment with applying filters to the masks on image and adjustment layers, or on individual image color channels. To get information about a plugin, open the 'Help' menu on Windows or the 'Photoshop' menu on the Mac, locate the 'About Plug-in' submenu and select an item in the list to view its information.
You can examine Photoshop's native plugins as well as your third-party items.