Please check:

1. Your photo is in RGB color mode

2. Your photo is in 8bit color mode

3. If you are experiencing errors, try resetting your Photoshop preferences. To do this,
hold down Alt, Ctrl, and Shift keys (Mac: Command, Option, Shift) while starting up Photoshop.
A dialog box will appear asking if you wish to delete the preferences/settings file.

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HOW TO INSTALL THE ACTION
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1. Inside Photoshop, go to the 'Window' menu and select 'Actions'. A window
will now appear to the right hand side.

2. Inside the Actions window, click on the top right hand corner icon to reveal
the drop down menu. From here select 'Load Actions...'. Select the action which
came with the download.

3. The action will now appear in the actions panel.


PS: OR YOU CAN JUST DOUBLE CLICK THE brush AND ACTION AND BINGO..!

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HOW TO USE THE ACTION
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1. Open a photo to work with

2. Go to action pallet, open the actions folder, select the action

3. create a new layer and call it brush then fill in your subject

4. Now click play on the action!

5. follow instructions ( if you have problems watch the video tutorial)

Enjoy,