upgrade 1.7 > 2.0 > 3.0 Bellyaches about template_functions.php

[pixelita]

My site's completely borked after upgrading from 1.7 to 2.0 to 3.0. It happened on the last iteration. I get a white screen with these errors:

Warning: include(template_functions.php) [function.include]: failed to open stream: No such file or directory in /home/@@@@@/public_html/getsimple/admin/inc/common.php on line 26

Warning: include(template_functions.php) [function.include]: failed to open stream: No such file or directory in /home/@@@@@/public_html/getsimple/admin/inc/common.php on line 26

Warning: include() [function.include]: Failed opening 'template_functions.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/@@@@@/public_html/getsimple/admin/inc/common.php on line 26

Fatal error: Call to undefined function get_root_path() in /home/@@@@@/public_html/getsimple/admin/inc/common.php on line 28

It seems like it's asking for a file (templates_function.php) that isn't in the distro. I guess I should revert back to 2.0 for the time being? Fortunately, this is my sandbox site, but I was getting ready to upgrade a client from 1.7 to 3.0.

Advice?