BuddyPress SOCIAL Theme & BP plugin: Update Issues with customized Social Theme

Hello,

having some issues updating BuddyPress AND the Social Theme...

I run a customized Social Theme on http://TheJazzHang.com

CURRENTLY RUNNING:

WP 3.3
BuddyPress Social 1.2.9 as the PARENT THEME
BuddyPress 1.5.2

FIRST QUESTION: UPDATE ORDER?

I was planning/trying to do it in this order:
1) Update BuddyPress
2) Update Social Theme
3) Update WP

Does that order make sense?

WHAT ACTUALLY HAPPENED WHEN I TRIED TO UPDATE:

1) After updating BUDDYPRESS: site displayed almost normally.
BUT, the narrower column on the RIGHT was no longer showing... (on any of my pages)

2) After updating the SOCIAL THEME:
Site was no longer visible, and I saw THIS ERROR MESSAGE instead:

Fatal error: Call to undefined function wp_get_theme() in /home/thejazzh/public_html/wp-content/themes/bp-social/_inc/functions/options-functions.php on line 10

(After seeing this issue, I deleted the site and restored my backup via BackupBuddy...)

Any pointers?

Thanks!

Falk