So not certain if folks know, soon after this (1.8.6 1447) was released, PI released -another- minor release (1448) that’s not “updateable”.
https://pixinsight.com/forum/index.p...79221#msg79221
You’ll need to uninstall the 1447 version again, and reinstall the 1448. But at least you don’t have to ask for a new license again.