There is a fact that cannot be changed no matter what FatCow tells you, and this is that when you try to run the timthumb.php script your server responds with a 400 Bad Request:
http://www.wegotest.com/sandra/wp-content/themes/theme-traject/includes/timthumb.php
Click the link above and see for yourself.
This is a server issue. It has nothing to do with the theme, nothing to do with WordPress, but it is associated with the TimThumb script which requires groups and permissions to be set correctly on your server in order for it to write files (the thumbnails) to your server.
And despite what FatCow has told you, you have not set the incorrect image path. Click on this:
http://ww.wegotest.com/sandra/wp-content/uploads/2012/08/ac1.png
See?
Fat Cow is just blowing you off, they haven’t looked past the broken image symbol, which they have assumed means that you have set the an incorrect path and/or filename. They are talking out of their fat backside.
Have you tried updating the TimThumb script? The current version is 2.8.10 and you are using version 2.1.