Invalid database structure

I have migrated a 3.2.1 project to one of the latest 4.2.2 version of Mendix. This comes together with a new release of the project I'm working on. I am momentarilly trying to get this version working on the test server. I have unpacked the latest model, i have restored a copy of the latest production database. When I enter the "start" command in puTTY, i get the following error: "Executing start did not succeed: result: 3, message: Invalid database structure." When I use a database in my own Local model, it automatically updates the structure. Does anyone know how I can update the database structure on the test server?
1 answers

Upgrade the database locally, backup it and upload to the test server, restore it on the test server.