Okay, good deal. Next step, I would start with one of the images that has the incorrect path. Log into the admin side of WordPress and go Media -> Library. Find that specific image.
In the posts table of your database, each post and image is listed by an ID number. You can get the specific ID number for an image by hovering your mouse over any of the links for an image in Media -> Library. The link will show in the status bar of most browsers, and the link will look something like this:
http://yourdomain.com/wp-admin/post.php?post=X&action=edit
where “X” is the integer ID of the post. Save that number.
Now you need to take a look at your database. Hopefully, your web host makes something like phpMyAdmin available to do that.
Go into phpMyAdmin, click on the link in the left column that corresponds to your WordPress database. Then click on the link for the “posts” or “wp_posts” table. Page through until you find the record for the image with the ID you got above. Now look at the “guid” field for that image. If the path doesn’t have the “/blog” in there, I think you’ve found the problem and the solution.
To test a fix, click on the Edit link for that record, scroll down to the guid field, add the “/blog” so the path to the image is correct, and click the “Go” button to save your changes. Verify that the “guid” field now reflects the correct path to the image. If it does, reload your browser on the page for the site that displays that image and see if it fixed it. (You may need to clear your browser cache, Ctrl + F5 in Firefox.)
If that fixes it, all you need to do is fix all the images so that the path is correct. Fortunately, that’s easy to do with phpMyAdmin and a single SQL update query. In phpMyAdmin, you click on the SQL toolbar button. Click the “Clear” button below the “Run SQL query/queries on database” box to clear the contents of the text area, then paste in the following query:
Update wp_posts SET guid = REPLACE(guid, 'markblower.com/wp-content', 'markblower.com/blog/wp-content')
Note that you will have to use the name of your posts table where I have “wp_posts.” What that query is doing is looking in all the guid fields in the wp_posts table and replacing the string “markblower.com/wp-content” with the string “markblower.com/blog/wp-content.”
If you don’t have access to phpMyAdmin, there used to be a plugin that would do this for you, too, so all is not lost.
