After first updating my 2.x install to the latest version of 2.x, I am now attempting to upgrade to 3.x. I downloaded fresh copies of 2.x and 3.x today, so they should both be the very latest builds.
I think I’ve followed all the preparatory steps, but when I attempt to start the upgrade I get a blank page located at <system>/index.php?C=wizard&M=do_update&language=english
I have updated admin.php to reflect my changed system directory name and I am not sure what else could result in it coming to a stop right there. I can see that it took database.php and copied info config.php, but nothing more seems to happen after that.
I am running PHP 5.5.26 and mySQL 5.7.11.
Edited to add: Oops, maybe this should have been in How do I instead.