I’ve been happily using my key command for Paste Special>Reduce for some days, but today it stopped working. I confirmed it was still there in Preferences, and even re-input it, but to no avail. And although it can be seen in Preferences, it doesn’t appear in the context menu when I go to Paste Special>Reduce.
The key command I chose was Ctrl+Shift+Alt+R. By doing this I overrode something about running a script, which I’m unlikely to use (mainly because I don’t know what it means), but is it a bad key combination to choose for some operational reason? The same key combination, but with E instead of R, continues to work perfectly as my key command for Explode.