ConstraintViolationException when adding a new document (after remodelling?)

I've added a new document type and used "Update content".
Adding a document of the type works fine, however when adding documents of other types, this error occurs:

10.07.2008 12:14:17 INFO [org.hippoecm.repository.decorating.WorkflowManagerImp
l$WorkflowInvocationHandler.invoke():488] AUDIT workflow invocation null.org.hip
poecm.repository.standardworkflow.FolderWorkflowImpl.add(document, page, texttea
ser4) -> javax.jcr.nodetype.ConstraintViolationException

10.07.2008 12:14:17 ERROR [org.hippoecm.frontend.dialog.AbstractDialog$1.onClick
():58] javax.jcr.nodetype.ConstraintViolationException: no matching property def
inition found for

{http://www.hippoecm.org/nt/1.0}

uri
javax.jcr.nodetype.ConstraintViolationException: no matching property definition
found for

{http://www.hippoecm.org/nt/1.0}

uri
at org.apache.jackrabbit.core.nodetype.EffectiveNodeType.getApplicablePr
opertyDef(EffectiveNodeType.java:773)
at org.apache.jackrabbit.core.NodeImpl.getApplicablePropertyDefinition(N
odeImpl.java:912)
at org.apache.jackrabbit.core.NodeImpl.getOrCreateProperty(NodeImpl.java
:409)
at org.apache.jackrabbit.core.NodeImpl.getOrCreateProperty(NodeImpl.java
:380)
at org.apache.jackrabbit.core.NodeImpl.setProperty(NodeImpl.java:2279)
at org.hippoecm.repository.decorating.NodeDecorator.setProperty(NodeDeco
rator.java:164)
at org.hippoecm.repository.standardworkflow.FolderWorkflowImpl.copy(Fold
erWorkflowImpl.java:313)
at org.hippoecm.repository.standardworkflow.FolderWorkflowImpl.copy(Fold
erWorkflowImpl.java:304)
at org.hippoecm.repository.standardworkflow.FolderWorkflowImpl.add(Folde
rWorkflowImpl.java:165)
at org.hippoecm.repository.standardworkflow.FolderWorkflowImpl.add(Folde
rWorkflowImpl.java:138)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hippoecm.repository.decorating.WorkflowManagerImpl$WorkflowInvoca
tionHandler.invoke(WorkflowManagerImpl.java:435)
at $Proxy8.add(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294)
at sun.rmi.transport.Transport$1.run(Transport.java:153)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:4
66)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport
.java:707)
at java.lang.Thread.run(Thread.java:595)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Stream
RemoteCall.java:247)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:
223)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:126)
at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Remo
teObjectInvocationHandler.java:179)
at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvo
cationHandler.java:132)
at $Proxy8.add(Unknown Source)
at org.hippoecm.frontend.plugins.standardworkflow.FolderWorkflowDialog.e
xecute(FolderWorkflowDialog.java:92)
at org.hippoecm.frontend.dialog.AbstractWorkflowDialog.ok(AbstractWorkfl
owDialog.java:108)
at org.hippoecm.frontend.dialog.AbstractDialog$1.onClick(AbstractDialog.
java:54)
at org.apache.wicket.ajax.markup.html.AjaxLink$1.onEvent(AjaxLink.java:6
5)
at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.ja
va:163)
at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(Abstract
DefaultAjaxBehavior.java:293)
at org.apache.wicket.request.target.component.listener.BehaviorRequestTa
rget.processEvents(BehaviorRequestTarget.java:100)
at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents
(AbstractRequestCycleProcessor.java:91)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.j
ava:1171)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1248)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1349)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:493)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:
387)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.ja
va:199)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(Servlet
Handler.java:1084)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:3
60)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.jav
a:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:1
81)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:7
26)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)

at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHand
lerCollection.java:206)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.
java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:1
52)
at org.mortbay.jetty.Server.handle(Server.java:324)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:50
5)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpCo
nnection.java:829)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.ja
va:395)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.j
ava:488)