I downloaded the latest file from the link that you provided above, put it in the folder `/wp-content/plugins/bbpress/includes/admin/converters` but I couldn’t import my old Mingle forum into bbPress.
When I click start button I get this:
Repair any missing information: Continue
No replies to convert
No tags to convert
No topics to convert
No forum parents to convert
No forums to convert
The settings which I tried as below:
Select Platform: Mingle
Database Server: My host IP
Database Port: 3306
Database Name: My database name
Database User: My database user name
Database Password: My database password (which I use to login to phpMyAdmin)
Table Prefix: The prefix that used in my database.