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Can't view Personas properly

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Before When I wanted to change a persona, I was able to mouse over the ones in the gallery to see what it would look like without having to install it first. Now I can't...has something changed now?

Before When I wanted to change a persona, I was able to mouse over the ones in the gallery to see what it would look like without having to install it first. Now I can't...has something changed now?

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Previewing a persona only works on sites that are whitelisted via an allow exception.

You can see the permissions for the domain in the current tab in:

  • Tools > Page Info > Permissions > [X] Install Extensions or Themes
  • Tools > Options > Security : "Warn me when sites try to install add-ons": Exceptions

Make sure that you do not use Delete browsing, search and download history on Firefox to clear the 'Site Preferences'.

See http://kb.mozillazine.org/Themes#Lightweight_theme