SharePoint Site Import Error

When trying to import a SharePoint site using stsadm (SharePoint 2010), we receive the following error. What needs to be done to correct it?

[2/15/2011 3:55:33 PM] [Folder] [SitePages] Progress: Importing
[2/15/2011 3:55:33 PM] [Folder] [SitePages]   Verbose: Source URL: SitePages
[2/15/2011 3:55:33 PM] [Folder] [SitePages]   Error: Value does not fall within the expected range.
[2/15/2011 3:55:33 PM] [Folder] [SitePages]   Debug:    at Microsoft.SharePoint.SPWeb.GetWebRelativeUrlFromUrl(String strUrl, Boolean includeQueryString, Boolean canonicalizeUrl)
   at Microsoft.SharePoint.Deployment.FolderSerializer.GetFolderUrl(Guid folderId, String folderUrl, Guid folderParentId, Guid listId, SPWeb parentWeb, ImportObjectManager objectManager, Boolean checkTargetUrl)
   at Microsoft.SharePoint.Deployment.FolderSerializer.GetFolder(SPWeb parentWeb)
   at Microsoft.SharePoint.Deployment.FolderSerializer.SetObjectData(Object obj, SerializationInfo info, StreamingContext context, ISurrogateSelector selector)
   at Microsoft.SharePoint.Deployment.XmlFormatter.CallSetObjectData(Object obj, SerializationInfo objectData, ISerializationSurrogate surrogate, ISurrogateSelector selector)
[2/15/2011 3:55:33 PM] FatalError: Value does not fall within the expected range.
[2/15/2011 3:55:33 PM] Debug:    at Microsoft.SharePoint.SPWeb.GetWebRelativeUrlFromUrl(String strUrl, Boolean includeQueryString, Boolean canonicalizeUrl)
   at Microsoft.SharePoint.Deployment.FolderSerializer.GetFolderUrl(Guid folderId, String folderUrl, Guid folderParentId, Guid listId, SPWeb parentWeb, ImportObjectManager objectManager, Boolean checkTargetUrl)
   at Microsoft.SharePoint.Deployment.FolderSerializer.GetFolder(SPWeb parentWeb)
   at Microsoft.SharePoint.Deployment.FolderSerializer.SetObjectData(Object obj, SerializationInfo info, StreamingContext context, ISurrogateSelector selector)
   at Microsoft.SharePoint.Deployment.XmlFormatter.CallSetObjectData(Object obj, SerializationInfo objectData, ISerializationSurrogate surrogate, ISurrogateSelector selector)
   at Microsoft.SharePoint.Deployment.XmlFormatter.ParseObject(Type objectType, Boolean isChildObject)
   at Microsoft.SharePoint.Deployment.XmlFormatter.DeserializeObject(Type objectType, Boolean isChildObject, DeploymentObject envelope)
   at Microsoft.SharePoint.Deployment.XmlFormatter.Deserialize(Stream serializationStream)
   at Microsoft.SharePoint.Deployment.ObjectSerializer.Deserialize(Stream serializationStream)
   at Microsoft.SharePoint.Deployment.SPImport.DeserializeObjects()
   at Microsoft.SharePoint.Deployment.SPImport.Run()
[2/15/2011 3:55:33 PM] Progress: Import did not complete.
[2/15/2011 3:55:33 PM] Finish Time: 2/15/2011 3:55:33 PM.
[2/15/2011 3:55:33 PM] Duration: 00:00:22
[2/15/2011 3:55:33 PM] Finished with 1 warnings.
[2/15/2011 3:55:33 PM] Finished with 2 errors.