Err : Invalid library

hi, i've been playing around with the php-gtk extension (don't worry this is not OT), but am having problems after installing the latest cvs version of php4. when I try and run a script (and even when i do 'php -v') i get the following error : PHP Warning: Invalid library (maybe not a PHP library) 'php_gtk.so' in Unknown on line 0 now, I know that this library works because I had it running with my previous cvs version of php. I've tried reinstalling php-gtk, and also php4 from both cvs and snaps.php.net but still the same problem. has anyone got any ideas what could be causing this problem ? thanks, barry -- http://www.theshining.org