I convert phpFusion to SMF 2 RC 3.0. Does not work Newsletters.
Go to News and Newsletters -> newsletter -> bla-bla-bla
Pages slow refreshed and counts 100%. No action.
In error_log - nothing!
Mail type = PHP default - 0
notification of new topics - pass.
If I install a new forum, newsletter - pass.
Probably a problem in the converted database?
sorry :-)
Might be a longshot, but did you run "Find and Repair any errors" in Admin -> Maintenance -> Forum Maintenance?