Problem in preview

[app2us]

www.app2us.com/blog

wp version 2.9.2
Education theme version 1.0, purchased and uploaded a few hours ago

Problem: I can see the education theme added as "Available themes" on the "manage themes" page. It has ACTIVATE PREVIEW and DELETE links. When I click PREVIEW, I get this error at the bottom of the preview page:

Catchable fatal error: Object of class WP_Error could not be converted to string in /home/content/html/blog/wp-content/themes/education_10/home.php on line 40

Above message is a hyperlink and if I click, this page opens:

http://app2us.com/blog/%3Cbr/ ( http://app2us.com/blog/<br/ )

I have not Activated, because the actual page could have the same error. So if you access my blog, you will still see the old default theme.
Please help.


The line 40 in home.php is:
<p class="textright"><b><a href="<?php echo get_category_link(get_theme_mod('featured_top_left ')); ?>" rel="bookmark"><?php _e("Read More Posts in", 'studiopress'); ?> <?php echo $featcat; ?></a></b></p>
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Another problem with the preview:
The posts are visible in one column on the left and right column is completely blank - and no blog categories etc are seen. Is this expected and is some customization required to make stuff appear in the second column?