Zend refuses to include file while parser finds it

When I run the Zend debugger, it returns an error telling me it cannot find a certain include, while when I run the site it works fine. My development machine is a WIMP (the server is a LAMP but it's not relevant here). This is not the first include in this site, but the first include inside of an include: require("includes/initiate.php"); I have tried pretty much everything: require("initiate.php"); require("/includes/initiate.php"); require("./initiate.php"); And a few others more exotic. The error I get is: Debug Warning: C:\Inetpub\wwwroot\bfbb\includes\pages\header.php line 3 - main(includes/initiate.php): failed to open stream: No such file or directory Compile Error: C:\Inetpub\wwwroot\bfbb\includes\pages\header.php line 3 - main(): Failed opening required 'includes/initiate.php' (include_path='.;c:\php4\pear') The include initiate.php calls a bunch of functions and classes. Should I change the include_path to make Zend understand where to look? And why don't I get the error message with the previous includes? I am testing Zend to determine if it is good environment (currently using Dreamweaver, which is not that bad, but I heard that Zend is the reference). Thanks for the help!