in the plugins page, under each plugins’ name usually there are buttons/links like “Deactivate | Edit | Settings”. Recently on one of my sites the “Edit” (and “Settings”) button has disappeared. I have just “Deactivate” or “Activate | Delete”.
My question is – what could cause this?
I am logged in as an administrator, so I should see the buttons. I suspect that something might have vent wrong with the installation of the last plugin but I am not sure.
Is there some scenario when these buttons get disabled (hidden) or do I have a bug / error?
EDIT:
This is happening on the server. I also have the exact same files (just checked with a comparer) running on my local computer, where plugins have all the buttons. I am now looking in the DB to find differences, but so far have not found anything significant.
Sounds like a file permissions error, make sure the user the web server is running as (typically www-data or similar) has write permissions to the plugin files.