Trying to get a php package installed (PleskBilling formerly modernbill) and I get PHP include errors for things that are on the includes path.
Mind you I have tried /, \\ and \ in my path (knowing that \ is correct)
Warning: require_once(/lib-pkg/parsefunction.php) [function.require-once]: failed to open stream: No such file or directory in C:\plesk-billing\admin\path.php on line 34
Fatal error: require_once() [function.require]: Failed opening required '/lib-pkg/parsefunction.php' (include_path='.;c:/php/includes;C:/plesk-billing/lib-pkg;C:/plesk-billing/action-api;C:/plesk-billing') in C:\plesk-billing\admin\path.php on line 34