I have just tried to upgrade LimeSurvey to version 4.1. Unfortunately I cannot upgrade the database. I get the following error:

An error occurred during the database update. Error information:
CDbCommand could not execute the SQL statement: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'question' in 'field list'

What can I do? Thanks for your help.

Same here!

I try to upgrade from 3.22.12+200406 to 4.2.0+200422.

Current DB version: 359
Target DB version: 426

Is it possible that I cannot do this, because of critical DB version 400 (found in application/helpers/update/updatedb_helper.php)?

Please let us know how to fix this. Thx!

I currently would not recommend to upgrade a productive environment from 3.x LTS to 4.x. If it is for testing purposes, perfect. Go for it. But if you use the installation for prodution work, I would stay on 3.x LTS just a little bit longer.