This code works fine for me. I have Win 10 build 14393, with kixforms v 2.47.5.0. Tested with both kix32.exe/wkix32.exe v 4.66 and 4.67.

 Code:
Break On
$nul = SetOption(Explicit, On)

Global $System, $Form, $

$System = CreateObject("Kixtart.System")
$Form = $System.Form()
$Form.Text = @Build

$Form.Show()
While $Form.Visible
   $=Execute($Form.DoEvents)
Loop

Maybe try un-registering the dll, replacing, and re-registering.

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