I'm trying to install an update of window blinds and am suffering from an unusual issue.
When I start the update I get the window blinds setup window appear, with the opening screen for accepting license agreement.
However, I only know this because when I hover over it in the taskbar I can see this.
Once I try to click on it, it disappears. It is the same if try to alt tab to it.
I have tried doing alt-space but again it looses focus and disappears.
With the result I cannot install the update.