Can't sync Drupal users to Civicrm Contacts

I just did a vanilla install of civicrm-drupal-php4-1.5-rev7470.tgz on a Drupal 4.74 site. I'm running PHP4 and MySQL 4.1. I'm running the civicrm database separate from the main Drupal DB.

Everything seems to be working fine, except that I can't sync users-to-contacts. I get the following sql error msg:

"Database Error Code: Table 'SITE_civicrm.users' doesn't exist, 1146" (SITE is used here to replace my user account name)

Below that message I get the followin description:

Array
(
[callback] => Array
(
[0] => CRM_Core_Error
[1] => handle
)

[code] => -18
[message] => DB Error: no such table
[mode] => 16
[debug_info] => SELECT uid, mail FROM users where mail != '' [nativecode=1146 ** Table 'palmcen_civicrm.users' doesn't exist]
[type] => db_error
[user_info] => SELECT uid, mail FROM users where mail != '' [nativecode=1146 ** Table 'palmcen_civicrm.users' doesn't exist]
[to_string] => [db_error: message="DB Error: no such table" code=-18 mode=callback callback=CRM_Core_Error::handle prefix="" info="SELECT uid, mail FROM users where mail != '' [nativecode=1146 ** Table 'palmcen_civicrm.users' doesn't exist]"]
)

I checked the MySQL install file and users isn't one of the tables that's created upon installation. Is it just missing in the latest version of Civicrm? Does the sync tool not work for this version?

I'm running organic groups on the site, but I don't see how that could cause this issue.

Thanks,
Sean