Need help analysing error messages

[eluser]Morty[/eluser]
Hello !

I am trying to solve a fopen which does not work and by looking at the logs I get :

Code:

DEBUG - 2008-01-15 10:02:46 --> Config Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Hooks Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Router Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Output Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Input Class Initialized
DEBUG - 2008-01-15 10:02:46 --> XSS Filtering completed
DEBUG - 2008-01-15 10:02:46 --> XSS Filtering completed
DEBUG - 2008-01-15 10:02:46 --> XSS Filtering completed
DEBUG - 2008-01-15 10:02:46 --> Global POST and COOKIE data sanitized
DEBUG - 2008-01-15 10:02:46 --> URI Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Language Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Loader Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Config file loaded: config/freakauth_light.php
DEBUG - 2008-01-15 10:02:46 --> Helpers loaded: url, form, array, freakauth_light, html
DEBUG - 2008-01-15 10:02:46 --> Database Driver Class Initialized
DEBUG - 2008-01-15 10:02:46 --> FreakAuth Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Session Class Initialized (db)
DEBUG - 2008-01-15 10:02:46 --> Helpers loaded: form
DEBUG - 2008-01-15 10:02:46 --> Helpers loaded: url
DEBUG - 2008-01-15 10:02:46 --> Helpers loaded: freakauth_light
DEBUG - 2008-01-15 10:02:46 --> Model Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Model Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Model Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Controller Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Model Class Initialized
DEBUG - 2008-01-15 10:02:46 --> Plugins loaded: reader
ERROR - 2008-01-15 10:02:46 --&gt; Severity: Warning  --&gt; fopen(d:\jupiter\imports\temp\Stock US -0.XLS) [<a href='function.fopen'>function.fopen</a>]: failed to open stream: No such file or directory D:\www\jupiter\system\application\models\stock_model.php 447
DEBUG - 2008-01-15 10:02:47 --&gt; Database Driver Class Initialized
DEBUG - 2008-01-15 10:02:47 --&gt; File loaded: D:\www\jupiter/system/application/views/FreakAuth_light/template/menu.php
DEBUG - 2008-01-15 10:02:47 --&gt; File loaded: D:\www\jupiter/system/application/views/FreakAuth_light/template/header.php
DEBUG - 2008-01-15 10:02:47 --&gt; Language file loaded: language/english/freakauth_lang.php
DEBUG - 2008-01-15 10:02:47 --&gt; File loaded: D:\www\jupiter/system/application/views/FreakAuth_light/content/login_anchor_user.php
DEBUG - 2008-01-15 10:02:47 --&gt; File loaded: D:\www\jupiter/system/application/views/stocks/import.php
DEBUG - 2008-01-15 10:02:47 --&gt; File loaded: D:\www\jupiter/system/application/views/FreakAuth_light/template/content.php
DEBUG - 2008-01-15 10:02:47 --&gt; File loaded: D:\www\jupiter/system/application/views/FreakAuth_light/template/footer.php
DEBUG - 2008-01-15 10:02:47 --&gt; File loaded: D:\www\jupiter/system/application/views/FreakAuth_light/template/container.php
DEBUG - 2008-01-15 10:02:47 --&gt; Final output sent to browser
DEBUG - 2008-01-15 10:02:47 --&gt; Total execution time: 1.2406
DEBUG - 2008-01-15 10:02:47 --&gt; Config Class Initialized
DEBUG - 2008-01-15 10:02:47 --&gt; Hooks Class Initialized
ERROR - 2008-01-15 10:02:47 --&gt; 404 Page Not Found --&gt;
DEBUG - 2008-01-15 10:02:47 --&gt; Config Class Initialized
DEBUG - 2008-01-15 10:02:47 --&gt; Hooks Class Initialized
ERROR - 2008-01-15 10:02:47 --&gt; 404 Page Not Found --&gt;

And the next ones are even more odd, because nothing seems to be loaded :

Code:

DEBUG - 2008-01-15 10:02:48 --> Config Class Initialized
DEBUG - 2008-01-15 10:02:48 --> Hooks Class Initialized
ERROR - 2008-01-15 10:02:48 --> 404 Page Not Found -->
DEBUG - 2008-01-15 10:02:48 --> Config Class Initialized
DEBUG - 2008-01-15 10:02:48 --> Hooks Class Initialized
ERROR - 2008-01-15 10:02:48 --> 404 Page Not Found -->
DEBUG - 2008-01-15 10:04:03 --> Config Class Initialized
DEBUG - 2008-01-15 10:04:03 --> Hooks Class Initialized
ERROR - 2008-01-15 10:04:03 --> 404 Page Not Found -->
DEBUG - 2008-01-15 10:16:07 --> Config Class Initialized
DEBUG - 2008-01-15 10:16:07 --> Hooks Class Initialized
ERROR - 2008-01-15 10:16:07 --> 404 Page Not Found -->
DEBUG - 2008-01-15 10:16:28 --> Config Class Initialized
DEBUG - 2008-01-15 10:16:28 --> Hooks Class Initialized
ERROR - 2008-01-15 10:16:28 --> 404 Page Not Found -->

Does someone know how to find (at least), on which pages are pointing the 404s ?

Thanks in advance to everyone.

edit: I forgot to mention that it works (fopen) with my test server which is using same WAMP version. I also have these errors in the logs however. Both are using Windows, so it should not be a permission issue (but I might be wrong).