The precise steps you need to follow to install the panel will depend on the version of Photoshop you are using.

So before moving on to the installation steps, first open Photoshop and look at the version number at the very top of the application:

For Photoshop CC users, the version will usually be shown like in the screenshot above.

If you do not see a version number at the top like in the screenshot above, then choose “Window > Application Frame” from the menu to see if that makes it appear.

If you can see the Application Frame but it doesn’t contain a version number, then browse to the “About Photoshop” menu item (which can be found under the “Photoshop” menu on a Mac, or under the “File” menu on a PC).

This will bring up an “about” box that should indicate the version number:

Photoshop CC Installation

  1. Download the appropriate installation file for your Photoshop CC from the members area (click here to log in and download)
  2. Once downloaded, double-click the zip file to extract it’s contents.
  3. This will result in a folder being created with the name: com.luminositymaskingpanel.ppmpanel
  4. Copy the entire com.luminositymaskingpanel.ppmpanel folder into the correct folder for your Creative Cloud version. You have to create the folder if it does not exist. 
    • If you have Photoshop CC 2014, CC 2015, CC 2015.5, CC 2017 or above:
      • Mac OS: /Library/Application Support/Adobe/CEP/extensions/
      • Windows x64: C:/Program Files (x86)/Common Files/Adobe/CEP/extensions/
      • Windows x32: C:/Program Files/Common Files/Adobe/CEP/extensions/
    • If you have Photoshop CC (old version):
      • Mac OS: /Library/Application Support/Adobe/CEPServiceManager4/extensions/
      • Windows x64: C:/Program Files (x86)/Common Files/Adobe/CEPServiceManager4/extensions/
      • Windows x32: C:/Program Files/Common Files/Adobe/CEPServiceManager4/extensions/
  5. Restart Photoshop. You will find the extension at Window > Extensions > PPM Luminosity Masking Panel V1_0

Photoshop CS5 / CS6 Installation

  1. Download the appropriate installation file for your Photoshop CS5 / CS6 from the members area (click here to log in and download)
  2. Once downloaded, double-click the zip file to extract it’s contents.
  3. This will result in a folder being created with the name: PPM Panel v CS 1_0
  4. Copy the entire PPM Panel v CS 1_0 folder into the correct folder for your CS version of Photoshop. You have to create the folder if it does not exist. 
    • If you have Photoshop CS5
      • Mac OS: /Applications/Adobe Photoshop CS5/Plug-ins/Panels/
      • Windows x64: C:/Program Files (x86)/Adobe/Adobe Photoshop CS5/Plug-ins/Panels/
      • Windows x32: C:/Program Files/Adobe/Adobe Photoshop CS5/Plug-ins/Panels/
    • If you have Photoshop CS6
      • Mac OS: /Applications/Adobe Photoshop CS6/Plug-ins/Panels/
      • Windows x64: C:/Program Files (x86)/Adobe/Adobe Photoshop CS6/Plug-ins/Panels/
      • Windows x32: C:/Program Files/Adobe/Adobe Photoshop CS6/Plug-ins/Panels/
  5. Restart Photoshop. You will find the extension at Window > Extensions > PPM Panel V CS 1_0

Troubleshooting

Here I will add the solutions to common installation issues that are reported to me. If you are experiencing issues installing the Panel, please check every one of these possible causes. If none of them solve the issue for you, please provide details via the feedback form here

Issue: I can’t find the Panel in Photoshop

A1: Thing to check (ALL USERS): If you have installed the panel but it is not appearing in Photoshop, then the first thing to check is whether you have “opened” it via the “Window > Extensions” menu. If not, then restart the Photoshop application, then see the screenshot below for where to find the Panel.

If the panel is not listed in the Extensions menu, then the most likely reason is that the panel folder has not been copied into the correct folder on your computer (as per step 4 in the instructions). 

A2: Thing to check (Mac users with Photoshop CC): By far the most common reason among Mac users is the confusion caused by the fact there are two almost identical file/folder paths that look like the correct one – but only one of them is the correct one. Watch this video for the full explanation:

A3: Thing to Check (ALL USERS): If you are 100% certain you’ve copied the panel folder into the correct location but it is still not appearing in the Extensions menu in Photoshop, next, verify the panel folder extracted correctly. 

For some reason, when some users double-click to extract the downloaded zip file, an extra level of folders gets created. For example, the com.luminositymaskingpanel.ppmpanel folder gets created with another com.luminositymaskingpanel.ppmpanel folder inside it… 

To eliminate this as the issue, check to see if the folder you have installed has another folder inside it with the same name. If it does, delete the top level folder then repeat installation step 4 but copy the inner com.luminositymaskingpanel.ppmpanel folder into the extensions folder. 

A4: Thing to Check (WINDOWS USERS): x86 Folder issues

You might find you have BOTH the following folders on your computer:

  • C:/Program Files (x86)
  • C:/Program Files <–without the (x86)

If you do have both, and you’ve installed the panel folder in the adobe extensions folder in one of them and it’s not appearing in Photoshop, then try the other equivalent folder.

For example if the instructions above tell you to install the panel here:

  • C:/Program Files (x86)/Common Files/Adobe/CEP/extensions/

And it’s not working, try installing the panel here:

  • C:/Program Files/Common Files/Adobe/CEP/extensions/

A5: Thing to Check: Non-English versions of Windows/Mac

If you have your computer configured in a language other than English, then you may have a “Program Files” (windows) or “Applications” (mac) folder available, as well as the equivalent in your language. The only example I’ve seen of this is a French-Canadian customer who had to install the panel in their “Fichiers de programme” folder, which I think means Program Files. But I assume the same applies to other languages too.

Issue: I’m getting an error when I try to open the Panel

B1: Thing To Check (ALL USERS): The first thing to check is that you have downloaded and installed the correct version of the panel according to the version of Photoshop you are using. 

There are now three available downloads, one for each Photoshop version CS5, CS6 and CC. 

If you are receiving an error message when opening the panel, then most likely you have installed the wrong version.