Cannnot make changes to Group Wikis

Hello,

I am having problems with the Group Wiki feature. I am able to edit and save my personal Wiki, but I cannot save changes to the group wiki. I have tried various users and permissions, but it simply will not accept the change. It will let me add a new Group wiki, but even then I can't change the contents of it. Can anyone else reproduce this problem?

Regards,

Edvin