How can I make Firefox trust a Server Certificate by Default?

I'm trying to distribute Firefox via Empirum. All settings are made using the CCK-Wizard Addon.
When I import our Certificates in CCK-Wizard, I can make trust-settings for CA's, but not for Server Certificates, and so the SC isn't trusted by default.
Is there any way to make the trust Settings for SC's in the install package, maybe through an option in about:config (didn't find any, but maybe somebody knows more than google :P )?
I tried to do it like PRF_1 suggested here https://support.mozilla.org/de/questions/687296#answer-112220 but in the last step I got an Error 1: C compiler cannot create executables.
Regards,
Bowser

Hello,
'''Try Firefox Safe Mode''' to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
''(If you're not using it, switch to the Default theme.)''
* On Windows you can open Firefox 4.0+ in Safe Mode by holding the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac you can open Firefox 4.0+ in Safe Mode by holding the '''option''' key while starting Firefox.
* On Linux you can open Firefox 4.0+ in Safe Mode by quitting Firefox and then going to your Terminal and running: firefox -safe-mode (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
* Or open the Help menu and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
[[Image:FirefoxSafeMode|width=520]]
''Once you get the pop-up, just select "'Start in Safe Mode"''
[[Image:Safe Mode Fx 15 - Win]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshooting extensions and themes]] article for that.
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''
Thank you.

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