Getting error in stsadm -o import

Hi all,

I have created page using master page in share point designer2010.

In that page I have inserted a web part zone and added SQL server reporting services report viewer.

I exported that particular site using stsadm -o export and tried to import same using stsadm -o import

But in import log I saw following error

[3/22/2013 2:44:30 AM] [ListItem] [zz_250.aspx] Progress: Importing
[3/22/2013 2:44:30 AM] [ListItem] [zz_250.aspx]   Verbose: List URL: /List/Pages
[3/22/2013 2:44:30 AM] [ListItem] [zz_250.aspx]   Progress: Importing web parts
[3/22/2013 2:44:30 AM] [ListItem] [zz_250.aspx]   Error: Value cannot be null.
Parameter name: command
[3/22/2013 2:44:30 AM] [ListItem] [zz_250.aspx]   Debug:    at Microsoft.SharePoint.Utilities.SqlSession.ExecuteNonQuery(SqlCommand command)
   at Microsoft.SharePoint.Deployment.WebPartSerializer.StopImport(ImportObjectManager objectManager, Guid fileId)
   at Microsoft.SharePoint.Deployment.FileSerializer.UpdateWebPartData(SPWeb web, SPFile file, SPLoggerObject loggerObject, String webPartXml, StreamingContext context, ISurrogateSelector selector, String fileServerRelativeUrl, Guid fileId, String linksXml, String originalParentWebUrl)
   at Microsoft.SharePoint.Deployment.FileSerializer.UpdateFileAssocData(SPFile file, SPLoggerObject loggerObject, SPWeb web, Guid id, String fileUrl, SerializationInfoHelper infoHelper, StreamingContext context, ISurrogateSelector selector)
   at Microsoft.SharePoint.Deployment.FileSerializer.CreateOrUpdateFileAndAssocData(Object fileOrListItem, SPLoggerObject loggerObject, SPWeb web, Guid id, String& fileUrl, Boolean fileExistsInDb, SerializationInfoHelper infoHelper, SerializationInfoHelper infoHelperListitem, StreamingContext context, ISurrogateSelector selector)
   at Microsoft.SharePoint.Deployment.ListItemSerializer.AddOrUpdateDoclibItem(SerializationInfoHelper infoHelper, SPListItem& listItem, SPLoggerObject loggerObject, SPWeb web, Guid newId, String& listItemServerRelativeUrl, Boolean bIsPublish, Boolean exists, StreamingContext context, ISurrogateSelector selector)

And when I open that page it contains the web part zone without SQL server reporting services report viewer.

The same thing I have tried out by creating web part page from SharePoint and preformed same steps

It works fine.

But in case of creating web part page from SharePoint 2010 I get blank page (with master page design)

Can anyone help me to either to remove the error or any work around...

Thanks