I just checked the other PC and it had 1.11 installed. When I asked it to check for an update it said there wasn't one.
So I uninstalled 1.11
Then reinstalled and was asked if I wanted the update that was avilable (?)
I clicked yes and it downloaded the update BUT proceeded to reinstall 1.11 even though it told me it was downloading the update.
So I uninstalled 1.11 again and reinstalled what was downloaded into my folder, which had no number, but todays date, so I assumed it was the one just downloaded.
And now I have version 1.12 and it's all good on the other PC. I don't know if it's Windows, me, or Stardock, but there seems to be some kind of issue with the updating on this particular app.