DNN Powerful Skin skin.less.txt wasn't found (404) FileError

If you receive this error you are probably blocking the txt file from being accessed.  In my case that particular site was blocking all txt files on the web server in IIS.  Specifically under the HTTP Features -> Request Filtering under IIS, then find the .txt extension, right click and click "Remove".   Once that restriction was removed the sites started showing some modifications properly.

Before some odd things were happening like white text on white background, and inability to change any colors via the color picker menu. 

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