I am running Yosemite and have had the Postgres.app running with no issues for months. I started the app today and got this error
Could not initialize database cluster.
initdb: could not create directory "I": Permission denied
What could cause this to happen and what do I do to fix it?
This baffled me for ages too. Turns out I had errantly typed while the preferences dialog was open which changed the data directory. Using 'default' fixed my issue.