For this error, check if the system has a 32 bit version of Access installed on the running machine:
Error Description: Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
at mars6.MarsGlobal.CreateAccess(Boolean isDebug, String OpenArgs)
Error Number: 91
Error Line: 230
Error Source: mars.clsMain.Main