Latest update crashed my site.

[dklassen]

All I get now is a This page isn't working HTTP ERROR 500. What can I do?

[LibbyCat50]

Mine too! AAGGHHH

[matt_corley]

This happened because of version 4.0.0 being incompatible with php 5.2 and before. We just pushed an update this morning, version 4.0.1 that fixed this.