What can i do to fix this problem, every time the IE6 is installed with my RunOnceEx, i got an explorer.exe error. There is my RunOnceEx file @echo off SET KEY=HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnceEx REG ADD %KEY% /V TITLE /D "Installing Applications" /f REG ADD %KEY%\001 /VE /D "Preparing Installation" /f REG ADD %KEY%\001 /V 1 /D "%systemdrive%\install\prepare.cmd" /f REG ADD %KEY%\005 /VE /D "Internet Explorer 6 SP1" /f REG ADD %KEY%\005 /V 1 /D "%systemdrive%\ie6\ie6setup.exe /Q:A /R:N" /f REG ADD %KEY%\010 /VE /D "Windows Update" /f REG ADD %KEY%\010 /V 1 /D "%systemdrive%\install\update.cmd" /f REG ADD %KEY%\015 /VE /D "Adobe Acrobat Reader 6" /f REG ADD %KEY%\015 /V 1 /D "\\wor0007\install\aread6\AR6.msi /qn" /f REG ADD %KEY%\020 /VE /D "Microsoft Office XP Professional" /f REG ADD %KEY%\020 /V 1 /D "\\wor0007\install\offpro\setup.exe TRANSFORMS=\\Wor0007\Install\offpro\Office.MST /qb-" /f REG ADD %KEY%\025 /VE /D "Real VNC 3.3.7" /f REG ADD %KEY%\025 /V 1 /D "%systemdrive%\install\vnc337.exe" /f REG ADD %KEY%\030 /VE /D "NetTime" /f REG ADD %KEY%\030 /V 1 /D "REGEDIT /S %systemdrive%\install\nettime.reg" /f REG ADD %KEY%\030 /V 2 /D "%systemdrive%\install\nettime.exe" /f REG ADD %KEY%\035 /VE /D "Microsoft Mail" /f REG ADD %KEY%\035 /V 1 /D "%systemdrive%\install\MSMail4XP.exe /s" /f REG ADD %KEY%\040 /VE /D "Java Virtual Machine" /f REG ADD %KEY%\040 /V 1 /D "%systemdrive%\install\msjavx86.exe /Q:A /R:N" /f REG ADD %KEY%\045 /VE /D "Multilanguage Pack for Office" /f REG ADD %KEY%\045 /V 1 /D "\\wor0007\install\offmui\1036\setup.exe TRANSFORMS=\\Wor0007\Install\offmui\1036\muifra.MST /qb-" /f REG ADD %KEY%\050 /VE /D "Cleaning Up and Rebooting" /f REG ADD %KEY%\050 /V 1 /D "%systemdrive%\install\cleanup.cmd" /f EXIT thanks