When I try the fix on https://bbpress.org/forums/topic/fix-for-phpbb3-to-bbpress-conversion-script/page/2/#post-205592, I get this error on an endless loop:
Converting anonymous reply authors (100 through 100 of 100)
Figured it out myself.
If anybody else is wondering how to do this, you need to make sure that no Founder, Admin or Moderator has replies or threads attributed to them.
I got around this by creating a new admin/founder account and downgrading all of the staff to standard accounts so that they could be imported.
I had the same problem (with phpBB 3.2.4) and no users importing. I tried creating a new founder and downgrading everyone else to standard accounts.
It still won’t work. Was there anything else you did?
Having the exact same issue. No users to import and stuck in a loop. Very frustrating.
I know this is a pretty dead thread but as I recently encountered this I thought I would let people know my solution.
I discovered that the import tool expects certain fields to exist in the profile_fields_data or phpbb. In my case I was missing pf_phpbb_aol, pf_phpbb_wlm, pf_phpbb_googleplus.
I added each of these columns and the system started processing users without a problem.
hey, thanks for posting this helpful solution – it will help others 🙂