Python program stops running but there is not an error message. I know that the "Repair" is completed without a problem because I had print statements giving me the status of the program. After the program stops, I am able to start ArcMap and I can use the "DeleteIdentical" tool manually without a problem on the output data and it removes 171 duplicate lines.Below is the code and I have tried several things like putting a tolerance for the DeleteIdentical and skipping the MultpartToSinglePart and I added the part to do a Repair. Also, tried using "in_memory" instead of a file-geodatabase. This exact same code has worked in the past.
# stream is the path to the file-geodatabase feature class.
arcpy.Identity_analysis (stream + "3", "BrdgDeck", stream + "4")
arcpy.MultipartToSinglepart_management (stream + "4", stream + "5")
arcpy.RepairGeometry_management (stream + "5")
arcpy.DeleteIdentical_management (stream + "5", ["Shape", "NOTE"])