Phpbb SEO to Mybb - It´s possible?

[CR15714N]

Hello everybody. I'm looking for a way to convert my phpbb SEO forum to Mybb. I tried to carry out the process with the phpbb 3 converter but it didn't work. I shop at the second stage of the process "Import Usergroups phpBB 2." The error is:

Quote:MySQL error: 1054
Unknown column 'group_single_user' in 'where clause'
Query: SELECT COUNT(*) as count FROM woofree_groups WHERE group_id > 2 AND group_single_user != '1'

Can anyone help me?. I'm in love with the latest version of Mybb and I don't want to miss the opportunity to convert my forum to this system . Thanks in advance

Cheers.
Cristian.