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Kaspersky Internet Security 2015 and Firefox themes

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I've just downloaded new version of KIS - KIS 2015 - and suddenly none of the themes in firefox I had installed does not work. Instead of the theme I set up there is only this basic colour like white, orange, green, etc. What's strange, themes on the mozilla website works. When I hover my mouse over it, they change in my browser. So what's going on here? Is this KIS fault or what?

I've just downloaded new version of KIS - KIS 2015 - and suddenly none of the themes in firefox I had installed does not work. Instead of the theme I set up there is only this basic colour like white, orange, green, etc. What's strange, themes on the mozilla website works. When I hover my mouse over it, they change in my browser. So what's going on here? Is this KIS fault or what?

All Replies (3)

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Some themes are no longer compatible with new Firefox versions.

Go to the Mozilla Add-ons Web Page {web link} (There’s a lot of good stuff here) and search for the themes and see if they have been flagged.

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O. So there is new ver of firefox that I'm working at? I didn't even know. If that's the case it would explain this. I just thought that themes not working anymore because there is some kind of conflict with KIS or something. But wait, just to confirm it, I've got ver 31.0 and as far as I remember, add ons or themes that where not compatible with the ver that is installed on users machine, where just greyed out on the site. Isn't that the case now? Also, correct me if I'm wrong but when I've been checking the ver of the firefox, below the ver number was the button "restart to update" and I've always thought that by pressing it I would just restart my browser and it didn't. So if it's not doing that, isn't this the sign that there is something wrong with my browser?

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Are you talking about lightweight themes (Persona)? Those themes that only style the user interface (toolbar) area are always compatible with all Firefox versions.

Did you try to reinstall the theme?

Firefox only stores the header and footer image files of the currently selected Persona in the profile folder. The image files of other installed Personas are loaded from the server when you select a different Persona via "Add-ons > Appearance". If the image files are missing or can't be retrieved then you only see the text and background colors as specified in the data of the Persona.

You can check the HTTP request and response headers via the Live Http Headers extension to see if there are errors with requesting the images from the server.