I have a V2 forum, installed V3 and converted the V2 database, everything seems to be working OK.
search settings backend fulltext native
I run the maintenance search index Fulltext mysql create index and get the following error.
Also an indexing window opens and says indexing may take a few minutes to a few hours and seems to show that indexing is taking place.
SQL ERROR [ mysql4 ]
Column 'post_text' cannot be part of FULLTEXT index 
ALTER TABLE phpbb_posts ADD FULLTEXT (post_subject), MODIFY post_text mediumtext COLLATE utf8_unicode_ci NOT NULL, ADD FULLTEXT (post_text), ADD FULLTEXT post_content (post_subject, post_text)