I've been working with Statamic v1 for years, and can get v2 to work just fine locally with MAMP, but am having issues on my production server. With an untouched Redwood Sample Site, Installer.php passes with flying colors, but when I click Next, I get:
Whoops, looks like something went wrong. FatalErrorException in Stringy.php line 308: Call to undefined function Stringy\mb_regex_encoding()
I get the same error when I visit my site root. mbstring is enabled, although phpinfo says '--enable-mbstring', while on my local dev env it says '--enable-mbstring=all'. Not sure if this is meaningful...