phpbb2jforum problem: Data too long for column 'user_timezone'

[Migrated From Jforum.net]

I get the following error when importing phpbb data:

Tables cleaned...
Importing users...
java.sql.SQLException: Data too long for column 'user_timezone' at row 1
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2551)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1443)
at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedSt
atement.java:1239)
at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPrepared
Statement.java:903)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java
:1871)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java
:1796)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java
:1658)
at net.jforum.tools.phpbb2jforum.Main.importUsers(Main.java:172)
at net.jforum.tools.phpbb2jforum.Main.runForrestRun(Main.java:62)
at net.jforum.tools.phpbb2jforum.Main.main(Main.java:277)
[originally posted on jforum.net by golfman]