Installing on a Mac: include_path issues

Hey, folks -- -- I am switching over my development (I hope) to a Mac. Having some trouble with the configuration. Rudimentary scripts run fine in the document_root, but beyond that, my scripts in the include_path are not found. The include_path has a couple of directories in which I have my foundation classes and a clients application classes and other programs. For various reasons, I put them into my "Documents/Clients" folder. When I create to set the path to these files in PHP, they are: /Users/ken/Documents/Clients/comped_php /Users/ken/Documents/Clients/jaguar_php PHP doesn't find them, which has me stumped. php.ini shows the include_path correctly, as: /Users/ken/Documents/Clients/comped_php:/Users/ken/Documents/Clients/jaguar_php the document_root, configured in Apache is: /Users/ken/Sites/ The errors show as: include_once() [function.include]: Failed opening 'smm_header.php' for inclusion (include_path='/Users/ken/Documents/Clients/comped_php:/Users/ken/Documents/Clients/jaguar_php') in /Users/ken/Sites/smm_registration/smmcomputereducation.php on line 1 Any ideas or suggestions? Thanks, Ken