epifind indexing job failed with the following error...

09:38:46,077 ERROR [55] EPiServer.Find.Cms.FileIndexer.ReIndex - An exception occured while indexing (Batch): The underlying connection was closed: The connection was closed unexpectedly..
EPiServer.Find.ServiceException: The underlying connection was closed: The connection was closed unexpectedly. ---> System.Net.WebException: The underlying connection was closed: The connection was closed unexpectedly.
at System.Net.HttpWebRequest.GetResponse()
at EPiServer.Find.Connection.JsonRequest.GetResponse()
at EPiServer.Find.Api.Command.GetResponse[TResult](IJsonRequest request)
--- End of inner exception stack trace ---
at EPiServer.Find.Api.Command.GetResponse[TResult](IJsonRequest request)
at EPiServer.Find.Api.BulkCommand.Execute()
at EPiServer.Find.Client.Index(IEnumerable objectsToIndex)
at EPiServer.Find.Cms.BaseIndexer.Index(IEnumerable`1 files, Int32 batchSize)
at EPiServer.Find.Cms.FileIndexer.ReIndex(Action`1 statusAction, Func`1 isStopped)
2014-03-13 09:39:18,268 ERROR [55] EPiServer.Find.Cms.FileIndexer.ReIndex - An error occured while indexing (File): MapperParsingException[Failed to extract [100000] characters of text for [null]]; nested: TikaException[TIKA-198: Illegal IOException from org.apache.tika.parser.mp4.MP4Parser@3d8e1f38]; nested: IOException[Could not delete temporary file C:\Windows\SERVIC~2\NETWOR~1\AppData\Local\Temp\apache-tika-2828109083133642630.tmp]; .
2014-03-13 09:39:26,687 ERROR [55] EPiServer.Find.Cms.FileIndexer.ReIndex - An error occured while indexing (File): MapperParsingException[Failed to extract [100000] characters of text for [null]]; nested: TikaException[Invalid Image Resource Block Signature Found, got 3686985 0x384249 but the spec defines 943868237]; .