Website down after installation! Getting 500 internal server error

[ladyrider12]

Hi!
I am running Joomla 1.5.25
My own template which ran fine before upgrade
I was running virtuemart 1.1.9 and upgraded to 2.0

I can log into the joomla administrator menu just fine...virtuemart is there and it seems like everything has migrated successfully.
Here is my issue. When I go to the frontpage of my site it is down and showing a HTTP 500 Internal Server Error.

the website is http://www.minkblanketsandmore.com

Help?

Thank you,
Tammy

[jenkinhill]

Surely you did not try the migration on a live working site ?   http://forum.virtuemart.net/index.php?topic=95513

Look at server error logs to see what is causing the 500.

[ladyrider12]

Thank you for your reply. I didn't update this the owner of the site did. Then contacted me cuz they screwed up. At least they made a backup.

I checked the error logs and get the folllowing error:
[06-Jan-2012 02:02:48] PHP Fatal error:  Class 'VirtuemartControllerEnquiry' not found in /home6/minkbla1/public_html/components/com_virtuemart/virtuemart.php on line 70
[06-Jan-2012 09:06:23] PHP Fatal error:  Cannot redeclare class vmRequest in /home6/minkbla1/public_html/administrator/components/com_virtuemart/classes/request.class.php on line 597
[06-Jan-2012 02:07:33] PHP Catchable fatal error:  Object of class stdClass could not be converted to string in /home6/minkbla1/public_html/libraries/joomla/cache/storage/file.php on line 88