A friend of mine uses windower though, and used it to download the update. It also crashed when he tried to log in so he just opened regular POL and it booted just fine. (Indicating that it was a windower problem.) Think it turned out to be a plug-in. I forget which one exactly. He got on no one more than 4 minutes later though with no further problem. That being said, if you're getting crash after update, try to disable plug-ins or hit up the website as I'm sure they have something there.
Its the recasttimer and the blinkmenot plugins, gotta disable/uninstall to get it to work and I got in with out reinstalling works like a charm.. I kept wondering why I was getting kicked at log in screen...