Empty CMS-Page and mysql error in ACP

[CGhostGroup]

Hello, after updating my vB 3.8.4 to 4.2pl1 the cms and blog won't show.
The pages are only white (no content or sourcecode) and when I'm trying to edit CMS-Stuff inside the AdminCP I get mysql-errors (see below).

Anyone an idea how to get this working? (I importet the example-data while upgrade). Or maybe can I re-import CMS/Board content?


Navigationmanager:

Datenbankfehler in vBulletin 4.2.0:
 
Invalid SQL:
 
                               SELECT node.nodeid, node.parentnode,  node.url, node.permissionsfrom, node.setpublish, node.publishdate,  node.noderight, nodeinfo.title
                               FROM vb3_cms_node AS node
                               INNER JOIN vb3_cms_nodeinfo AS nodeinfo ON (nodeinfo.nodeid = node.nodeid)
                               WHERE node.contenttypeid =
                               ORDER BY node.nodeleft ASC;
 
MySQL-Fehler  : You have an error in your SQL syntax; check the manual  that corresponds to your MySQL server version for the right syntax to  use near 'ORDER BY node.nodeleft ASC' at line 5
Fehler-Nr.    : 1064
Fehler-Zeit   : Monday, 18.06.2012 @ 15:30:22
Datum         : Monday, 18.06.2012 @ 15:30:23
Skript        : /board/admincp/navigation.php?do=edit&navid=8
Referrer      : /board/admincp/navigation.php
Klassenname   : vB_Database
MySQL-Version : 5.1.61-0+squeeze1

Content Admin:

Datenbankfehler in vBulletin 4.2.0:
 
Invalid SQL:
SELECT node.nodeid, node.url, node.parentnode, node.nodeleft, node.noderight,
                                               node.setpublish, node.publishdate, info.title, node.permissionsfrom, node.hidden, COUNT(child.nodeid) AS children,
                                               SUM(CASE WHEN (child.setpublish > 0 AND child.publishdate < 1340026177 AND child.contenttypeid <> ) THEN 1 ELSE 0 END) AS publish_count
                                               FROM vb3_cms_node AS node
                                               LEFT JOIN vb3_cms_node AS child ON child.parentnode = node.nodeid AND child.new != 1
                                               LEFT JOIN vb3_cms_nodeinfo AS info ON info.nodeid = node.nodeid
                                               WHERE (node.contenttypeid = )
                                               GROUP BY node.nodeid, node.url, node.parentnode, node.nodeleft, node.noderight,
                                               node.setpublish, node.publishdate, info.title, node.permissionsfrom, node.hidden
                                               ORDER by node.nodeleft;;
 
MySQL-Fehler  : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') THEN 1 ELSE 0 END) AS publish_count
                                               FROM vb3_cms_node AS node
                                               LEFT JOIN ' at line 3
Fehler-Nr.    : 1064
Fehler-Zeit   : Monday, 18.06.2012 @ 15:29:37
Datum         : Monday, 18.06.2012 @ 15:29:38
Skript        : /board/admincp/cms_content_admin.php?do=list
Referrer      : /board/admincp/index.php?do=nav
Klassenname   : vB_Database
MySQL-Version : 5.1.61-0+squeeze1

Thanks and Greetings