Friendica: Fresh install: PHP Warnings on registration

[MrPetovan]

On a fresh install of the develop branch 3 weeks ago, clicking on the registration link at the end of the install, I get a few Warning: Illegal string offset 'url' in include/Core/Config.php on line 107/137 for url, build and addon.

I assume missing config values.

[Quix0r]

And maybe missing isset() calls?

[annando]

I'm bad in git stuff. Can someone provide a link to a file in the version when @Hypolite experienced the problem? We had changed much stuff in the config recently, so I want to make sure if the changes maybe have fixed the problem.

[MrPetovan]

Just did a fresh install with the 3.5.1rc branch and I didn't get the same warnings.