I recently set up a Linux box (RedHat 9) strictly to due some scripting (no server, no local db) using a PHP shared object library we obtained from an external source. We use MS for our development and production environment, so Ive had to relearn how to navigate the Linux environment as its been a couple years. I built the latest PHP release (5.2.5) from source and was able to sucsesfully connect to a database server and run scripts. Where I am running into trouble is when I try to dynamically link the .so file using dl(), I get the warning: Unable to load dynamic library 'library.so' - undefined symbol: zend_list_find. Since I am not experienced configuring and building a php install from source, I don't know if the problem lies with my installation or something else. The support from the .so provider has been next to worthless and a pretty extensive online search has turned up next to nothing. Any ideas?