I logged in to my sites Omeka.org site today to upload a new exhibit and realized that all of our exhibits were deleted. Upon further inspection, I noticed that it is not possible to view any of the items we have uploaded to our site. When one clicks on these items they receive an error message that I have attempted to upload an image of here.
First, follow the link in the error message to get instructions for turning on error reporting. That will give us lots more information to work from.
Second, check with your hosting company/server admin about any problems with the database or server that might be causing problems. Hopefully, they’ll have a backup that they can restore to.