Post Drupal 6.2 installation problems - please help

I had installed Drupal 6.1 on my localhost and built the site structure well with it. Now, I have a live hosting server where I wanted to install Drupal. I saw that Drpal 6.2 was available so I have started with a fresh installation.

here are things I have done:

Installed Drupal 6.2 on live server
Installed the compatible modules I needed
Modified the FrontPage module so that the users see a friendly splash page before the launch
I had used and modified Salamander so I copied all Salamander theme and images into the theme folder.
I had modified some images located in the misc folder so I copied those as well.

But the site is not working the way it did with Drupal 6.1

Blocks are not showing on right or left hand sides. Footer is not showing at all. I don’t see the navigation menu anymore so I need to type the URL to get into the menus. I have Push button for admin and modified Salamander for others.

I continuously get the following errors which I do not understand. Am I doing something wrong?

warning: include_once(./) [function.include-once]: failed to open stream: Success in /customers/montyscorner.org/montyscorner.org/httpd.www/includes/theme.inc on line 156.

warning: include_once() [function.include]: Failed opening './' for inclusion (include_path='.:') in /customers/montyscorner.org/montyscorner.org/httpd.www/includes/theme.inc on line 156.