Hi Mette,
I'm not sure I'm the one good enough on this question, but first, you have to download Netbeans 8.02 (I guess it's 8.01, but when you install it, it is reported as 8.02, I've never understood that) as it is said on the wiki (but I've just seen that the danish wiki is not updated. i will fix that). The error you have is because you are not declared on our system as a developer with full access on the repository. The user name and password are not the same as the ones you use here or on the wiki. Those username and password to access the repository are given by
Daniel André, the author of Ancestris.
Second, if you want to do/fix translation, the best tool is
Trancestris. Netbeans is the tool for development, so if you want your translation to be integrated to Ancestris using Netbeans, you have to request for a
developer access. I'm not sure it's a good thing to have a developer access just for translation, except if you know exactly what you're doing, because a wrong manipulation on your side can delete the source code of Ancestris on the repository ;-)
But of course if you know java language, and you want to help with the code itself, we will be happy to welcome you on our development team.
If so, the first step is to install Netbeans, then download the source code with an
anonymous access, create for example a report, or a plugin, send it to our dev team, and if it's ok, you will have a developer access on the repository to upload your work and make it available to all Ancestris users.
Best regards, Francois