"Can't add a parent from another space" error when moving a page to a new space and selecting a parent page.

The following error occured

java.lang.IllegalArgumentException: Can't add a parent from another space.
at com.atlassian.confluence.pages.Page.checkParentValid(Page.java:88)
at com.atlassian.confluence.pages.Page.setParentPage(Page.java:53)
at com.atlassian.confluence.pages.Page.addChild(Page.java:125)
at com.atlassian.confluence.pages.Page$$FastClassByCGLIB$$b75f5c02.invoke()
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:189)
at net.sf.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:108)
at com.atlassian.confluence.pages.Page$$EnhancerByCGLIB$$423cdd79.addChild()
at com.atlassian.confluence.pages.actions.EditPageAction.updateParentPage(EditPageAction.java:240)
at com.atlassian.confluence.pages.actions.EditPageAction.doSaveEditPageBean(EditPageAction.java:183)
at com.atlassian.confluence.pages.actions.EditPageAction.doEdit(EditPageAction.java:221)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)

Referer URL: http://localhost:8080/confluence/pages/editpage.action?pageId=266

Build Information:
Confluence Home: C:\temp\CSP-1787
Uptime: 4 minutes, 40 seconds
Version: @VERSION@
Build Number: @BUILD_NUMBER@

Server Information:
Application Server: Resin/2.1.11
Servlet Version: 2.3
Database Dialect: net.sf.hibernate.dialect.HSQLDialect

Memory Information:
Total Memory: 127 MB
Free Memory: 94 MB
Used Memory: 33 MB

System Information:
System Date: Wednesday, 30 Nov 2005
System Time: 10:27:37
System Favourite Colour: Chartreuse
Java Version: 1.4.2_02
Java Vendor: Sun Microsystems Inc.
JVM Version: 1.0
JVM Vendor: Sun Microsystems Inc.
JVM Implementation Version: 1.4.2_02-b03
Java Runtime: Java(TM) 2 Runtime Environment, Standard Edition
Java VM: Java HotSpot(TM) Client VM
User Name: Jens Schumacher
User Timezone: Australia/Sydney
Operating System: Windows XP 5.1
OS Architecture: x86
Request

Information:
URL: http://localhost:8080/confluence/500page.jsp

• Scheme: http
• Server: localhost
• Port: 8080
• URI: /confluence/500page.jsp
• - Context Path: /confluence
• - Servlet Path: /500page.jsp
• - Path Info: null
• - Query String: null

Attributes:

• javax.servlet.error.exception : java.lang.IllegalArgumentException: Can't add a parent from another space.
• sessioninview.FILTERED : true
• javax.servlet.error.status_code : 500
• com.atlassian.johnson.filters.JohnsonFilter_already_filtered : true
• atlassian.core.seraph.original.url : /pages/doeditpage.action?pageId=266
• webwork.valueStack : com.opensymphony.xwork.util.OgnlValueStack@aba7ff
• javax.servlet.error.servlet_name : action
• loginfilter.already.filtered : true
• os_securityfilter_already_filtered : true
• _sitemesh_filterapplied : true
• javax.servlet.error.message : Can't add a parent from another space.
• javax.servlet.error.request_uri : /confluence/pages/doeditpage.action
• javax.servlet.jsp.jspException : java.lang.IllegalArgumentException: Can't add a parent from another space.
• com.atlassian.core.filters.gzip.GzipFilter_already_filtered : true

Parameters:

• editPermission =
• locationShowing = true
• newSpaceKey = test2
• title = PageA
• versionComment =
• mode = richtext
• inPreview = false
• confirm = Save
• content = foo page bla
• labelsShowing = false
• originalVersion = 1
• originalContent = foo page bla
• wysiwygcontent = <p>foo page bla</p> 
• sel2 =
• pageId = 266
• xhtml = true
• selectedText =
• labelsString =
• restrictionsShowing = false
• sel1 =
• parentPageString = Home
• viewPermission =