The HTML Validator Firefox Plugin In Linux

I use the “HTML Validator” Firefox plugin daily. I found it does not work out of the box in Linux namely Fedora Core 6 and Fedora 7. You immediately get a HTML-rendered screen that states:

FATAL ERROR : The dynamic C library contained in the extension file could not be found

Getting rid of this message took me a few minutes of research and I never found a step-by-step HOW-TO for Fedora – so here goes!

Here is how you get rid of this message and get the plugin working in Fedora Core 6 or Fedora 7:

• First, uninstall the plugin by clicking on Tools-->Add-ons and clicking uninstall
• Second, close all instances of Firefox
• Next, install three packages using yum compat-libstdc++-296 compat-libstdc++-33 tidy

yum install compat-libstdc++-296 compat-libstdc++-33 tidy

• Reinstall the HTML Validator plugin
• Restart Firefox, done! HTML Validator should now be installed inside of Firefox on Fedora Core 6 or Fedora 7