[isf-wifidog] install error - Query failed: ERROR: function nextval(regclass) does not exist

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I have the latest subversion (at least as of 2 days or so ago).  When I try
and install I get this error:

Database initialisation

* Creating wifidog database schema :
Warning: pg_query() [function.pg-query]: Query failed: ERROR: function
nextval(regclass) does not exist HINT: No function matches the given name
and argument types. You may need to add explicit type casts. in
/var/www/apache2-default/wifidog/install.php on line 938
ERROR: function nextval(regclass) does not exist HINT: No function matches
the given name and argument types. You may need to add explicit type casts.
<=
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