Symantec Protection SharePoint Server 6.0.6 service crashes on SharePoint Server

SharePoint 2013 farm having Symantec Protection for SharePoint server enabled for antivirus scan. SPSS service starts crashing on server and below error appears on its SPSS logs:

System logs of SPSS:

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"(null)","-1","Error","There is already an object named 'SPSSObjects' in the database.","   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)    at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)    at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)    at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout, Boolean asyncWrite)    at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite)    at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()    at Symantec.Sharepoint.Service.DataAccess.SPSSDal.CreateSPSSObjectsTable(String configDb)","DAL: createSPSSObjectsTable","SPSSDal"

"(null)","0","Warning","Auto rescan queue is full.","","(null)","Symantec Antivirus"

"(null)","-1","Error","Object reference not set to an instance of an object.","   at Symantec.Sharepoint.RTCommandClient.RTCommand.RegisterClientChannel()","Symantec.Sharepoint.RTCommandClient","RTCommandClient"

Event logs:
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Application: Symantec.Sharepoint.SPSSService.exe

Framework Version: v4.0.30319

Description: The process was terminated due to an unhandled exception.

Exception Info: System.NullReferenceException

Stack:

   at Symantec.Sharepoint.SPSSCore.SPSVersion2013.SharePointServer2013.GetFiles(System.Object)

 

Cause:

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 - Its a bug with SPSS 6.0.6 version. SPSS service is not able to handle time outs on file scan and 404 filenot found exception during real-time scan and stops frequently on server.

Solution:

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- If you are using SPSS 6.0.6 version and everything setup properly in terms of permission, access on SP server and DB end and SPE servers, then you have to ask Symantec Support to provide new

Symantec.Sharepoint.SPSSCore.SPSVersion2013.dll to replace across all SP servers. As it helped fixing SPSS service crash issue at our end.