I just installed K2 and want to start using it at www.sophiejules.nl
I imported the articles and started making new ones. It seems that notings is saved and put online.
When I save an article in K2 it says:

Fout tijdens het laden van component: com_finder, 1 in English: error during the loading of component: com_finder, 1.

How can I solve this and use the options of K2. It seems that none of the options does the work right now.

You should try reinstalling K2 and you should also mention which version of Joomla!, K2 you are using as well as any other major frameworks/extensions.

Thanks, I tried to install K2 again, but still the same. I have Joomla! 2.5.11.
Can someone please help me?

You should find all the finder plugins through plugin manager and disable them.

PS. Always backup first.

I already did. I uninstalled the whole program and reinstalled it. I probably do something wrong myself, but it seems nobody can help me with this. Anybody who I can give admin rights to help me maybe?