Missing Sidebar & Comments with 2.6.5 (vs 2.6.3)

I am relatively new to WordPress and am working on a blog for a group at Auburn University. I did some preliminary work and experimentation on a WP installed locally on my notebook. A few days later I setup an account at GoDaddy and installed the latest available version of WordPress, 2.6.3, there.

I then created the prototype afresh at GoDaddy with a template (OLLI 0.6) I adapted from the popular Regulus template. However, when I imported the work to a fresh install on my notebook with 2.6.5 installed, comments and sidebar are missing on pages with comments.

Below is more information of the two situations using the OLLI template and two standard templates. Results vary from template to template.

Any ideas as to why things are happening differently on 2.6.5 (locally) and 2.6.3 (GoDaddy) and what needs to be fixed to get all the OLLI (and other templates) working properly?

Details: ON PAGES WITH COMMENTS…

Situation #1
WordPress 2.6.3 (enfolded.net/olliatauburn)
latest available version 2.6.3
clean install, new database
blog built here
exported for local installation

Themes & Results:
WordPress Classic 1.5 – OK. sidebar and Comments
WordPress Default 1.6 – PROBLEM. sidebar, but no Comments
OLLI 0.6 – OK. sideba and comments

Situation #2
WordPress 2.6.5 (local installation)
clean install,
About page removed
Welcome! comment removed
imported export from enfolded.net/olliatauburn

Themes & Results:
WordPress Classic 1.5 – OK. sidebar and Comments
WordPress Default 1.6 – PROBLEM. sidebar, but no Comments
OLLI 0.6 – PROBLEM. no sidebar, Comment header only