I think found a work around… just type in the following in the post area in content.php
:
`<?php if ( ‘post’ == get_post_type() ) : ?>
<div class=”entry-meta”>
<?php twentyeleven_posted_on(); ?>
<br/>
<span> <?php if ( is_page() || is_archive() ) { echo(‘ ‘); } else { echo(‘ by: ‘); the_author_posts_link(); } ?> </span>
</div><!– .entry-meta –>
<?php endif; ?>`
This will print out the author on every page that is not a “page” or archive.
I’m using the twenty-eleven theme.
Then I just turn off the posts on the Post Author plugin. I keep the pages on because I like the option to insert the author or not.