I get the above error for theme installs and wordpress update installs. I've seen this addressed in other topics, but I don't have the html or php experience to understand the answers. I know I have the correct ftp info-- I used cyberduck. Also, I was able to manually install a wordpress update. I used to be able to install themes-- I don't know what changed. I have 2 wordpress pages-- one has the newest wordpress and one doesn't, but I get the same error on both.
The ftp option for the install is grayed out "localhost". I did manage to go into the config file and try changing it to my ftp site. (saw that tip on one answer). I tried many variations. Maybe I have the format wrong of how I wrote it into the file? The ftp site is 0061a9d.netsolhost.com. (I believe this is my localhost, but that doesn't work either).
Any thoughts on correcting this error without knowing html or php?
Thank you! I'm at my wit's end!