It's possible I forgot sudo on the checkinstall. I will test again.
The main reason I use checkinstall is because there's a consistent way to uninstall the app later. If the problem turns out not to be checkinstall rather than forgetting sudo, I might have to use "sudo make". can you please go over how to uninstall a copy of Sigil that was installed with "sudo make install"? I did a search but the post I found was from 2013:
https://www.mobileread.com/forums/sh...d.php?t=225173
Is it still the case that deleting those 4 files/folders alone will uninstall Sigil completely? I know about the apt-get packages, but I'm not too worried about those because apt-get provides an easy way remove packages.