Problem with login module 1.3a

I am having a problem with the login module when running Mambo-SMF 1.3. I've done the component and SMF package installs without any problems, and everything is patched / configured and working as far as the integration goes. However, the Login Module shows all manner of errors on any page other than the forum's page, on which it works perfectly.

Some of the errors I get are listed below...

Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in D:\Site\forums\Sources\Subs.php on line 232

Warning: mysql_fetch_row(): supplied argument is not a valid MySQL result resource in D:\Site\forums\Sources\Load.php on line 40

Warning: mysql_free_result(): supplied argument is not a valid MySQL result resource in D:\Site\forums\Sources\Load.php on line 42