New Post: Trying to parameterize SiteListName and SiteUrl using package parameters - but produces error message VS_NEEDSNEWMETADATA

Hi All,
The package works wonderfully when explicitly configured using the SiteListName and SiteUrl in the properties window. However, I have to parameterize this package because we need to bulk import from serveral Tasks lists into a single destination SQL table.

1)Ally my tasks lists have the same content type (same internal field names)
2)I have verified that the parameter values are passing into the package correctly.

thanks,
Saurabh

Error message

Error: 2014-06-30 17:03:27.73
   Code: 0xC004706B
   Source: Data Flow Task SSIS.Pipeline
   Description: "SPTaskListSource" failed validation and returned validation status "VS_NEEDSNEWMETADATA".
End Error