we figured it was due to pm messages, possibly linked to deleted account... so deleted bunch of those and it works. Thanks!
Best posts made by spwolf
RE: Import plugin crashes every time I try to migrate from vBulletin to nodebb
RE: [nodebb-plugin-newsletter] Send e-mail newsletters to your users.
nodebb 1.50 and newsletter 0.6.4 - i can select only 2 user groups - Administrators and Everyone. I can not send to custom user groups anymore.
Tried it in both new topic and newsletter in admin panel.
Does anyone else have same problem? Any suggestions?