I've tested the code again with the released version and yes, it seems to drop the GUI object ($GUI=0, $GUI.Dispose() ?). However, when i use Shell 'InstallShield install Program' all action still stops until i kill KiXtart. With the old KiXforms 2.2.0, when i dropped the GUI object ($GUI=0) the Shell action was correct executed without killing KiXtart..

Sample:
Code:
$System=CreateObject('KiXtart.System')
If @Error
	Shell 'regsvr32 /s %SystemRoot%\Utils\KixForms.dll'
	$System=CreateObject('KiXtart.System')
	If @ERROR
		Exit
	EndIf
EndIf

; Define window..
$Basis               = $System.Form()
$Basis.Text          = 'Installing applications..'
$Basis.Left          = 50
$Basis.Top           = 50
$Basis.Width         = 350
$Basis.Height        = 130
$Basis.Minbutton     = 0
$Basis.Maxbutton     = 0
$Basis.Sysmenu       = 0
$Basis.Visible       = 1
$Basis.Show

; Place labels, text window, status frame..
$BasisWelcome       = $Basis.Label('Package installation script',10,10,260,18)
$BasisApplication   = $Basis.Label('Installing :',10,$BasisWelcome.Bottom+2,50,18)
$BasisPackage       = $Basis.Label('',65,$BasisWelcome.Bottom+2,$Basis.Width-71,18)
$BasisStatusFrame   = $Basis.Groupbox('Status',6,$BasisApplication.Bottom+2,$Basis.Width-20,$Basis.ClientHeight-($BasisApplication.Bottom+10))
$BasisStatus        = $BasisStatusFrame.Label('',8,14,$BasisStatusFrame.Width-12,$BasisStatusFrame.Height-24)


$Basis=0
If $Basis
	$Basis.Shell('%ComSpec% /c \\server\ofcscan\pccnt\disk1\install.exe')
Else
	Shell '%ComSpec% /c \\server\ofcscan\pccnt\disk1\install.exe'
EndIf
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Kind regards,