We have take also a look at it. Special attention takes te way you try to
upgrade with f.e. RUN command.
Your code:

code:

---

 $mcinstalldir=ReadValue("HKEY_LOCAL_MACHINE\Software\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion","szInstallDir")
 $mcupgradepath=ReadValue("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1\","szUNCLocation")
 ;$UpgradePath=ReadValue("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Update\Update Site1","szUNCLocation")
 IF ($mcupgradepath = "") OR ($mcupgradepath <> "\\server\itapps\distribution\virus\updates\engineupdate")
       ;SHELL "%comspec% /c regedit /s I:\distribution\virus\mcafeeupdatescripts\McAfeeEngineRegistry.reg" ; /s disables any pop up windows from appearing on the users computer
       ADDKEY ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1", "bAnonymousLogin", "1", "REG_DWORD")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1", "bProxy", "0", "REG_DWORD")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1", "bRebootSystem", "0" , "REG_DWORD")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1", "bRetrieveOnly", "0" , "REG_DWORD")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1", "bSiteEnabled", "1" , "REG_DWORD")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1", "bStoreAfter", "0" , "REG_DWORD")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1", "dwInternetAcessType", "0" , "REG_DWORD")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1", "dwProxyPort", "0" , "REG_DWORD")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1","szFTPLocation","","REG_SZ")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1","szftpPassword","","REG_SZ")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1","szftpUserName","","REG_SZ")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1","szProxy","","REG_SZ")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1","szSiteName","Philips","REG_SZ")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1","szStoreFolder","","REG_SZ")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1","szUNCLocation","\\server\itapps\distribution\virus\updates\engineupdate","REG_SZ")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1","szUpgradeCMD","","REG_SZ")
       WRITEVALUE ("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\Shared Components\McUpdate\CurrentVersion\Upgrade\Upgrade Site1","uUpdateFrom","1","REG_DWORD")
 ENDIF
 IF exist("I:\distribution\virus\updates\engineupdate\*eng.exe") ; Only need to rename and extract once
       DEL "I:\distribution\virus\updates\engineupdate\setup.exe"
       SHELL "%comspec% /c rename I:\distribution\virus\updates\engineupdate\*eng.exe setup.exe"
       RUN "I:\distribution\virus\updates\engineupdate\setup.exe /e I:\distribution\virus\updates\engineupdate\extracted" ; /e extracts the executable EndIf
       SLEEP 30 ; time for Extraction to complete
 ENDIF
 IF COMPAREFILETIMES("I:\distribution\virus\updates\engineupdate\extracted\mcscan32.dll","c:\Program Files\common files\network associates\virusscan engine\4.0.xx\mcscan32.dll") = 1; Downloaded file is newer than current file on the computer, proceed
       CD $mcinstalldir
       SHELL "%comspec% /c mcupdate.exe /task upgrade"
       SLEEP 20 ; Time for McAfee VirusScan to reinitialize itself before trying to perform a DatUpdate
 ENDIF

---

code:

---

 IF exist("I:\distribution\virus\updates\engineupdate\*eng.exe") ; Only need to rename and extract once
       DEL   "I:\distribution\virus\updates\engineupdate\setup.exe"
       SHELL "%comspec% /c rename   I:\distribution\virus\updates\engineupdate\*eng.exe  setup.exe"
       RUN   "%comspec% /c start /w I:\distribution\virus\updates\engineupdate\setup.exe /e I:\distribution\virus\updates\engineupdate\extracted" ; /e extracts the executable
 ENDIF
 IF COMPAREFILETIMES("I:\distribution\virus\updates\engineupdate\extracted\mcscan32.dll","c:\Program Files\common files\network associates\virusscan engine\4.0.xx\mcscan32.dll") = 1; Downloaded file is newer than current file on the computer, proceed
       CD    $mcinstalldir
       SHELL "%comspec% /c start /w mcupdate.exe /task upgrade"
       SLEEP 20 ; Time for McAfee VirusScan to reinitialize itself before trying to perform a DatUpdate
 ENDIF

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