This question may be related to a resolved thread.
I just updated from 2.3.1 to 2.4.0 and when I try to finalize the update by going to mysite.com/admin.php I get this message:
Your system folder path does not appear to be set correctly. Please open the following file and correct this: admin.php
But my folder path has been correctly renamed in both “admin.php” and “index.php” of the root folder. This has never happened before, nor on my other two sites I updated to 2.4.0. (I don’t use MSM; these are three separate sites for separate clients)
I enabled debugging and nothing changed.