newbie path question

[lechevar]

Hi,
I'm trying to work my way around a shopping cart.
I've uploaded it to my server. When I try to log in I get the error

Warning: main(templates/main_page.php): failed to open stream: No such file or directory in /usr/local/psa/home/vhosts/le-webdesign.com/httpdocs/e-cart/install/index.php on line 46

Warning: main(templates/main_page.php): failed to open stream: No such file or directory in /usr/local/psa/home/vhosts/le-webdesign.com/httpdocs/e-cart/install/index.php on line 46

Fatal error: main(): Failed opening required 'templates/main_page.php' (include_path=' .:/usr/share/pear') in /usr/local/psa/home/vhosts/le-webdesign.com/httpdocs/e-cart/install/index.php on line 46
I understand that a file on my server space is calling for a file in the wrong path.
However, what is the file with the code I need to change?
I tried doing a search with dreamweaver for source code text in the entire site, but could not find

usr/local/psa/home/vhosts anywhere in the files.
Do I need a debugger? How do I find the file to change it?
There is no help unless you pay an upgrade fee.
I have bought 2 shopping cart codes and not used them. :-) dumb. I can't do it again.

Thanks for any help.

Laura

[Atli]

Hi.

The problem is that your script is trying to include a .php file, and the path is incorrect or the file does not exist.

The code that is generating the error is in the file (e-cart/install/index.php) on line 46.