Fatal Errors right off the bat, then warnings

Hey All,

I bought Business, but when I installed it and viewed my site, php threw this error:

* Catchable fatal error: Object of class WP_Error could not be converted to string in /var/www/vhosts/powersimple.tv/httpdocs/company/wp-content/themes/Business/header.php on line 39

looking into the code, the error is being thrown by:

echo get_category_link($t_blog_page);

Which tells me that get_category_link is returning and Error object.

I'm a long time PHP programmer, but do not want to spend my time debugging software that I paid for. What could be causing this?

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As an aside, I commented out the echo statement (disabling certain links), and got another PHP message, this time a Warning:

Warning: join() [function.join]: Invalid arguments passed in /var/www/vhosts/powersimple.tv/httpdocs/company/wp-content/themes/Business/functions/admin-framework.php on line 30

Please advise as to why the theme is failing before my 24 hour return period ends.

Thanks,
David