New Post: Blog Package 2.0.4 - Will not allow me to save/publish data

3) I installed the package and added the BlogRender function to my page. I then tried to add an entry.

Not sure I am clear.

Have you also added the Blog application to the page where you added the BlogRender function? Where do you add blog posts?

Please see "Adding a blog manually" in the user manual

/Vitaly