I'm having a very annoying problem trying to upgrade my sites from 4.6.x to 4.7.x I have tried a few different versions and no matter what I do, the same thing happens.
So I have a multi-site installation. There is a main domain for the account, one parked domain, and 4 sub-domains off the parked domain. To upgrade, I log in with user 1 under all 6 sites at once. Then update the files to the new versions, and run "update.php" from each site. The parked domain and all of its sub domains update fine, but when I go to run the update.php from the primary domain, all I get is a blank white screen. I don't even get to the point where it asks to run the update scripts.
Does anyone have some insight into this? I'd really like to upgrade to 4.7.