I got the notice that 8.1 was available. I presently have 8.0.1. I attempted the update. I got the following error:
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So I manually killed the X1 process. I tried again. This time the install apparently completed successfully. However, at the end, I still have version 8.0.1.
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Clik here to view.

So I manually killed the X1 process. I tried again. This time the install apparently completed successfully. However, at the end, I still have version 8.0.1.