What causes Scripting Error 000714 in ArcGIS when using GetParametersAsText? [closed]

Question

I am trying to create a script tool in ArcGIS 10.2 in order to incorporate into a model. The script needs to incorporate three inputs which i've built using GetParameterAsText function then setting up the corresponding links within ArcGIS Script Tool Wizard.

However, when I run the script I get ERROR 000714 (see below). Not sure how to handle this error or why it isn't working to begin with.

import arcpy

inFC = arcpy.GetParameterAsText(0)
outFCName = arcpy.GetParameterAsText(1)
outFolder = arcpy.GetParameterAsText(2)
outFC = outFolder + "\\" + outFCName

try:
    if arcpy.Exists(outFC):
        arcpy.Delete_management(outFC)
    arcpy.CreateFeatureclass_management(outFolder,outFCName,"POLYLINE","#","DISABLED","DISABLED",inFC)
    arcpy.AddField_management(outFC,"inFID","LONG","#","#","#","#","NULLABLE","NON_REQUIRED","#")

    iCursor = arcpy.da.InsertCursor(outFC, ["inFID","SHAPE@"])

    print "Starting!"

    with arcpy.da.SearchCursor(inFC,["OID@", "SHAPE@"]) as sCursor:
        for row in sCursor:
            inFID = row[0]
            # Print the current multipoint's ID
            #
            # print("Feature {0}:".format(row[0]))
            partnum = 0

            # Step through each part of the feature
            #
            for part in row[1]:
                # Print the part number
                #
                # print("Part {0}:".format(partnum))

                # Step through each vertex in the feature
                #
                prevX = None
                prevY = None
                for pnt in part:
                    if pnt:
                        # Print x,y coordinates of current point
                        #
                        # print("{0}, {1}".format(pnt.X, pnt.Y))
                        if prevX:
                            array = arcpy.Array([arcpy.Point(prevX, prevY),
                                                 arcpy.Point(pnt.X, pnt.Y)])
                            polyline = arcpy.Polyline(array)
                            iCursor.insertRow([inFID,polyline])
                        prevX = pnt.X
                        prevY = pnt.Y
                    else:
                        # If pnt is None, this represents an interior ring
                        #
                        print("Interior Ring:")
                partnum += 1

    del iCursor

except Exception as e:
    print e.message
    arcpy.AddError(e.message)

print "Complete"

Here is the error:

Executing: SplitLines "F:\Extra Data\Prop Frontage\test_for_py.shp" tester.shp "F:\Extra Data\Prop Frontage"
Start Time: Thu Jan 23 11:38:46 2014
Running script SplitLines...
ERROR 000714: Error in script SplitLines.
Error in executing: cmd.exe /C F:\MASTER~2  "F:\Extra Data\Prop Frontage\test_for_py.shp" "tester.shp" "F:\Extra Data\Prop Frontage"

Failed to execute (SplitLines).
Failed at Thu Jan 23 11:38:46 2014 (Elapsed Time: 0.16 seconds)