[bass booster]

This happened to me before.

Delete the config.php and make a new one.

Try and reinstall it then -> if it doesn't work still, download the file and chmod it from there if possible.
If that failed, PM me, I'll chmod one for you that I know works from my linux host

[bass booster]

Haha I just remembered, filezilla doesn't always write the chmod option.
Go to your host cpanel look for file manager, right click that file/folder and look for chmod.

It just hit me when I looked at your pictures that filezilla fucks up on the chmod 99% of the time