[ariane1001]

After searching further I found out the problem is Buddypress is not using the theme override I made in my (child) theme. Everything is exactly as described here: https://codex.buddypress.org/themes/theme-compatibility-1-7/a-quick-look-at-1-7-theme-compatibility/ and it worked before.
What can be wrong?
I am using a childtheme for http://acoda.com/dynamix/

Thanks again,
ARiane

[ariane1001]

Hi, it was the theme. after updating it everything worked again.

If you look for information about updating you find an old post that says you have to deactivate buddypress before updating. But when you do that, and your theme is using parts of buddypress this will nog work and give the white screen.
It would be nice if the info would be more up to date.