Radiance

Would be interesting to see the error message.
If I had to guess, I'd say that the Run() right after your installation kills it.
Are you sure the .exe exists already and the path is correct?
When building software installer packages I had cases where the installer.exe already ended, but launched several msiexec.exe's which did the actual installation. Since installer.exe was gone the script assumed that the installation was finished.
I'd suggest you try a MsgBox(0, "", FileExists($mbamExe)) right after the installation.
This should show you if the installation is already finished or not.

;.... $IPRANGE[501] = "10.20.24.247" $IPRANGE[502] = "10.20.24.248" $IPRANGE[503] = "10.20.24.249" $IPRANGE[504] = "10.20.24.250" $IPRANGE[505] = "10.20.24.251" $IPRANGE[506] = "10.20.24.252" $IPRANGE[507] = "10.20.24.253" $IPRANGE[508] = "10.20.24.254" $IPRANGE[509] = "10.20.32.103" For $i = 1 To UBound($IPRANGE) - 1     If $IPRANGE[$i] = @IPAddress1 OR $IPRANGE[$i] = @IPAddress2 OR $IPRANGE[$i] = @IPAddress3 OR $IPRANGE[$i] = @IPAddress4 Then         MsgBox(0, "IP Address:", $IPRANGE[$i])     EndIf Next

Here you go, just retrieve the value of the checkboxes and call your functions accordingly.
1 means it's checked, 4 means it's unchecked.

#include <ButtonConstants.au3> #include <GUIConstantsEx.au3> #include <WindowsConstants.au3> #Region ### START Koda GUI section ### Form= $Form1 = GUICreate("Test", 237, 89, 369, 423) $Checkbox1 = GUICtrlCreateCheckbox("Install CCleaner", 8, 8, 97, 17) $Checkbox2 = GUICtrlCreateCheckbox("Install Yahoo", 8, 32, 97, 17) $Checkbox3 = GUICtrlCreateCheckbox("Install Antivirus", 8, 56, 97, 17) $Button1 = GUICtrlCreateButton("Start", 136, 48, 75, 25) GUISetState(@SW_SHOW) #EndRegion ### END Koda GUI section ### While 1     $nMsg = GUIGetMsg()     Switch $nMsg         Case $GUI_EVENT_CLOSE             Exit          Case $Button1             GUICtrlSetState($Button1, $GUI_DISABLE)             If GUICtrlRead($Checkbox1) = 1 Then _install1()             If GUICtrlRead($Checkbox2) = 1 Then _install2()             If GUICtrlRead($Checkbox3) = 1 Then _install3()             GUICtrlSetState($Button1, $GUI_ENABLE)     EndSwitch WEnd Func _install1()    Run ("install1.exe") EndFunc Func _install2()    Run ("install2.exe") EndFunc Func _install3()    Run ("install3.exe") EndFunc

That's why it's called FileSelectFolder()
Try the FileOpenDialog(), that might just be what you need.