Do you want your script to run on any servers? I don't, so I check simply if a server and exit.

code:
;  check if logon to Server or Workstation
;PRODUCTTYPE - WinNT = Workstation, ServerNT = Member Server, LanmanNT = Domain Controller
;
$PRODUCTTYPE = READVALUE("HKEY_LOCAL_MACHINE\SYSTEM\CURRENTCONTROLSET\CONTROL\PRODUCTOPTIONS","PRODUCTTYPE")
if $PRODUCTTYPE = "WinNT" goto NTwks endif
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