So, I know Warren's mother was named Catherine, but not her maiden name. I create a profile.
Name: Catherine (Unknown) Mackelprang (1864-1956); source.
I enter it all and get an orange banner containing the following error message:
Error with duplicate ID when creating account for Unknown
Unable to create/save new mother.
I've created profiles of this sort innumerable times. I can't figure out what's different this time. I've tried adding both as mother and as wife, makes no difference. Any idea what gives? Is there a problem with using "Unknown" as LNAB now? Or did something weirder happen?