Warning: Call-time pass-by-reference has been deprecated;

Beta4 gives a "Warning: Call-time pass-by-reference has been deprecated;" on my server.

Line 195, of timeine.module has one:
drupal_alter('timeline_theme_array', &$timeline_themes);

And line 328 of views_views_plugin_style_timeline.inc has one:
drupal_alter('timeline_data', &$timeline->data);

I've removed both of the & signs.