I've seen a few posts with this error, and tried all the recommendations without success.
When I originally uploaded the files into the blog subdirectory, no /blog/wp-admin directory was created in the unzipping process. Running install got the "There doesn't seem to be a wp-config.php file" message.
So I created one and copied all the files in there, too. Now I get
Warning: main(/home/whisperz/public_html/blog/wp-includes/wp-db.php): failed to open stream: No such file or directory in /home/whisperz/public_html/blog/wp-settings.php on line 39
Fatal error: main(): Failed opening required '/home/whisperz/public_html/blog/wp-includes/wp-db.php' (include_path='.:/usr/local/lib/php') in /home/whisperz/public_html/blog/wp-settings.php on line 39
As I said, I tried all the recommended fixes, including playing with different ABSPATH paths. Nothing seems to work.
Anyone got any ideas what to try next?