Copy/Move operation into SharePoint 2010 fails with:
[List] [LISTNAME] Error: Cannot complete this action.
Please try again.
[TIMESTAMP] [List] [LISTNAME] Debug: at Microsoft.SharePoint.SPGlobal.HandleComException(COMException comEx)
at Microsoft.SharePoint.Library.SPRequest.GetViewsSchemaXml(String bstrUrl, String bstrListName, Boolean bFullBlown, Boolean bNeedInitAllViews, ISP2DSafeArrayWriter p2DWriter, Int32& plDefaultViewIndex, Int32& plMobileDefaultViewIndex)
at Microsoft.SharePoint.SPViewCollection.EnsureViewSchema(Boolean fullBlownSchema, Boolean bNeedInitallViews)
at Microsoft.SharePoint.SPList.get_Views()
at Microsoft.SharePoint.Deployment.ViewSerializer.SetObjectData(Object obj, SerializationInfo info, StreamingContext context, ISurrogateSelector selector)
at Microsoft.SharePoint.Deployment.ListSerializer.UpdateListViews(SPList list, Dictionary`2 listMetaData, StreamingContext context, ISurrogateSelector selector)
at Microsoft.SharePoint.Deployment.ListSerializer.SetObjectData(Object obj, SerializationInfo info, StreamingContext context, ISurrogateSelector selector)
at Microsoft.SharePoint.Deployment.XmlFormatter.CallSetObjectData(Object obj, SerializationInfo objectData, ISerializationSurrogate surrogate, ISurrogateSelector selector)
This is a known SharePoint 2010 copy site issue.
Refer to the article below for solutions:
Discussion lists broken after installing SharePoint 2010 February Cumulative Update
