After upgrading to version 1.8.3 can not create new groups.

In the browser displays the following error:

• include(schema.inc.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory[/etc/zabbix/db.inc.php:944]
• include() [<a href='function.include'>function.include</a>]: Failed opening 'schema.inc.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php')[/etc/zabbix/db.inc.php:944]
• pg_query() [<a href='function.pg-query'>function.pg-query</a>]: Query failed: ERROR: function max() does not exist at character 8 HINT: No function matches the given name and argument types. You might need to add explicit type casts.[/etc/zabbix/db.inc.php:408]
• Error in query [SELECT max() AS id FROM groups WHERE >=0 AND <=99999999999] [ERROR: function max() does not exist at character 8 HINT: No function matches the given name and argument types. You might need to add explicit type casts.]
• pg_fetch_assoc() expects parameter 1 to be resource, boolean given[/etc/zabbix/db.inc.php:550]
• pg_free_result() expects parameter 1 to be resource, boolean given[/etc/zabbix/db.inc.php:552]
• pg_query() [<a href='function.pg-query'>function.pg-query</a>]: Query failed: ERROR: current transaction is aborted, commands ignored until end of transaction block[/etc/zabbix/db.inc.php:491]
• Error in query [INSERT INTO ids (nodeid,table_name,field_name,nextid) VALUES (0,'groups','',1)] [ERROR: current transaction is aborted, commands ignored until end of transaction block]
• DBEXECUTE_ERROR

And in the log database:
ERROR: function max() does not exist at character 8
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
STATEMENT: SELECT max() AS id FROM groups WHERE >=0 AND <=99999999999
ERROR: current transaction is aborted, commands ignored until end of transaction block
STATEMENT: INSERT INTO ids (nodeid,table_name,field_name,nextid) VALUES (0,'groups','',1)

In version 1.8.2 it works fine.