Stop nlserver from command line (nlserver shutdown)
Delete the server you configured and re-do the steps in sequence
As instructed in Integration into a Web server , before running step 3 A VBS script enables you to...
Open the file iis_neolane_setup.vbs in any editor and add the below bold line
Line #582
Select Case verOS
Case "10." GetOSVersion = 8 '= "IIS 8"
Case "6.3" GetOSVersion = 8 '= "IIS 8"
Case "6.2" GetOSVersion = 8 '= "IIS 8"
Case "6.1" GetOSVersion = 7 '= "IIS 7.5"
Case "6.0" GetOSVersion = 7 '= "IIS 7.0"
Case "5.2" GetOSVersion = 6 '= "IIS 6.0"
Case "5.1" GetOSVersion = 5 '= "IIS 5.x"
'Case "5.0" OSystem = "W2K"
'Case "4.0" OSystem = "NT 4.0**"
Case Else GetOSVersion = -1 '= "Unknown IIS version"
End Select
Good luck!