I am having a real issue here that I can’t seem to find an answer to. I am using Plesk, and have setup a new subscription. I have all of the proper settings, using FastCGI, ownership of files, etc. On a fresh install of wordpress and allowing multisite I cannot seem to create a new site and have it show up in the admin dashboard, or under My Sites dropdown. However, they do actually register in the database and I can access them through the Sites tab. I am completely lost here as to why this is possible.
In addition, when I try to activate my Gravity Forms Plugin and click on the Register settings link, I get the “You do not have sufficient permissions to access this page.”
If anyone can give me some insite here I would truly appreciate it so I can stop banging my head against a wall.
Have a look at your vhost and check for ‘allow override=All … If this is also a new server it might explain the problems
See my post here on how to check your apache config
You might also like to check that the folder permissions are set correctly for WordPress ie
www-data(the Apache user on Ubunutu servers) needs to have own/read/write everything in your WordPRess directory or be in the same group (this is important for plugins to run)