Hi Jason,
I just realized (duh) that I was looking at the version numbers incorrectly. I was looking at the numbers as decimals and that .17 was less than .4, but in fact .17 is build seventeen which is a much later version than .4 or build 4. Please verify that I am correct and that PowerStore 4.5.2 will work with php 5.2.17 (seventeen).
Sorry for the mix-up.