I am the developer of the Easy Comment Uploads Wordpress Plugin and recently many of my users have been informing me that the upload form does not work correctly with the Atahualpa theme.
Having looked at the theme's source code, it seems like the comment_form action is placed below the submit button for the comment form, contrary to the convention for most other themes including the default. Specifically this means that no plugin using that hook can include any forms of it's own and this is what prevents my plugin from functioning correctly - in addition no easy work around can be used (html forbids nested forms).
The solution is simple, near the end of comments.php, if you move the line <?php do_action('comment_form', $post->ID); ?> down to just above </form>, this should fix all of the issues.
i.e.
PHP Code:
<!-- Comment Textarea -->
<p><textarea name="comment" id="comment" rows="10" cols="10" tabindex="4"></textarea></p>
<!-- Submit -->
<p><input name="submit" type="submit" class="button" id="submit"
tabindex="5" value="<?php _e('Submit Comment','atahualpa'); ?>" />
<?php comment_id_fields(); ?></p>
<?php do_action('comment_form', $post->ID); ?>
</form>
</div><!-- / respond -->
Tom Wright