404 error on the homepage

Hi all!

I’m having a strange problem and I urgently need some help.

This is my site http://www.een-01.nl and it runs already for a couple of years, without errors. Yesterday I installed the Onswipe plugin. Maybe it is a coincidence but since this morning I get an 404 error when trying to reach my site on http://www.een-01.nl.

I can go into the admin panel however. I see that I have 13 pages and 320 posts. So I see the counters (13 and 320) but I don’t see a list with pages (or with the posts). It just says ‘no pages found’ (or ‘no posts found’). The comments are still there however.

My provider says that the databases are still ok.

So I could go back to a backup, but I prefer to try to solve the issue…
Thanks for any help!

Jan

[No bumping, thank you.]