I am using drupal 6.
1) I created a blog post and the teaser view displays in the blog page: https://newumwebdev.oit.umass.edu/sustainability/blog
2) I enabled node forms
3) I created a new blog post. teaser view no longer displays
4) I disabled node forms, created a blog post and teaser view no longer displays
5) went back to the pre-node forms working teaser view post, changed the title and now teaser view no longer displays

Comments

6) I had to finally disable this module and revert the database because after a while when I tried to save a blog post it would just go to the WSOD.