On MOSS publishing portal, with a page (with article page with summary
links layout) open, go to site actions, edit page. Then click on Page
dropdown on the page editing toolbar, select Page settings, then I got
the following error from the _layouts/PageSettings.aspx page:

Index was out of range. Must be non-negative and less than the size of
the collection.
Parameter name: index at
System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument
argument, ExceptionResource resource)
at System.ThrowHelper.ThrowArgumentOutOfRangeException()
at System.Collections.Generic.List`1.get_Item(Int32 index)
at Microsoft.SharePoint.SPFieldMultiColumnValue.get_Item(Int32 index)
at
Microsoft.SharePoint.Publishing.Fields.ContentTypeIdFieldValue.get_IsEmpty()

at
Microsoft.SharePoint.Publishing.PageLayout.get_AssociatedContentType()
at Microsoft.SharePoint.Publishing.PageLayout.get_UIDisplayName()
at
Microsoft.SharePoint.Publishing.PageLayoutComparerByUIDisplayName.Compare(PageLa\
yout
x, PageLayout y)
at
System.Collections.Generic.ArraySortHelper`1.QuickSort[TValue](T[]
keys, TValue[] values, Int32 left, Int32 right, IComparer`1 comparer)

Have any of you run into this problem? Any suggestions?