Migrating Problem Really Need Help - Website gone for good?

[mychoicegames]

Ok so in the month of April 2012 I was trying to fix something and was told the only way to fix it was if I upgraded to the latest version of Virtuemart. So what happens now is whenever I click something on the website I get this error

If anyone can fix my problem that would be great. When I tried to restore backups I still got this same error and I worked very hard on this website... Go here and click on anything. I get an error http://mychoicegames.com/

The error is: Fatal error: Cannot redeclare class convertECB in /home/mychoice/public_html/administrator/components/com_virtuemart/classes/currency/convertECB.php on line 24

[dillydally]

I have exactly the same after an upgrade today, I haven't tried a restore as yet!

Can anyone advise  I have this on the front end of the site
..../currency/convertECB.php on line 24

and this on the back end
administrator/components/com_virtuemart/classes/request.class.php on line 597


Thanks

[jenkinhill]

http://forum.virtuemart.net/index.php?topic=100969.msg334329#msg334329
http://forum.virtuemart.net/index.php?topic=90925.msg303232#msg303232
http://forum.virtuemart.net/index.php?topic=89455.msg293115#msg293115

http://forum.virtuemart.net/index.php?topic=95513.0