render($page['content']) not rendering

Hi,

I have upgraded my web for testing from drupal 6 to 7. I have modified the page.tpl to display content and footer using render function but it is not rendering the content. But the content is there in the array. Following is the print_r output for $page['footer']

Array
(
[block_9] => Array
(
[#markup] =>

Physical Address Address

[#contextual_links] => Array
(
[block] => Array
(
[0] => admin/structure/block/manage
[1] => Array
(
[0] => block
[1] => 9
)
)
)
[#block] => stdClass Object
(
[bid] => 673
[module] => block
[delta] => 9
[theme] => cz
[status] => 1
[weight] => -29
[region] => footer
[custom] => 0
[visibility] => 0
[pages] =>
[title] =>
[cache] => -1
[subject] =>
)
[#weight] => 1
[#theme_wrappers] => Array
(
[0] => block
)
)
[#sorted] => 1
[#theme_wrappers] => Array
(
[0] => region
)
[#region] => footer
)

Can some one help me to solve this problem?

Thanks in advance