Hi,
Sorry for the issues you are having. I can help out.
Thanks for the infomation about the deactivating the plugins. We can try to figure this out without changing themes for now.
Since it is just giving a white screen that looks like a php error.
Can you please turn on the WordPress Debug to see if we can get more information.
Please follow the steps in the WordPress Debug Codex in the Example wp-config.php for Debugging section:
http://codex.wordpress.org/Debugging_in_WordPress
Please place that coding and load the events page a couple time then check the error log and see if there are any errors.
Let me know what you find out and we can go from there.
Thanks