What on Earth is a PostgreSQL CMS connection and how do I fix it?
Got the 'valid PostgreSQL CMS connection could not be established' error message just now. I've vaguely heard of it but I don't exactly know what it is. I upgraded to Studio 4:23 a few days ago - maybe that's caused it. I don't even know what a PostgreSQL is, let alone where to find it and reconnect it to Studio. Can anyone help? I'm off to bed now. Grump-grump-grump-grump-grump...

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Press F2 in DS (Edit > Preferences...), CMS Settings tab, check the settings as below ss.
Has your s ecurity software had a recent update? What do you use?
Thank you, both of you. I don't know what's going on, but when I started systems up this morning, everything was just there. @crosswind, I did go in and havea look and it all matches your settings. @Richard Haseltine: I use Bitdefender. Thank you both again, hopefully there won't be a recurrence.