Ladies and Gents,
the other day, the infamous "Invalid argument supplied for foreach()" struck my homepage. I tried to add a new feature slide in the admin panel and upon clicking save: voila! My database was trashed. The values for "pagelines_options" and "pagelines_options_redundant" were emptied, the Dashboard was unresponsive and the site was flooded with errors like the one in the title.
Users of WhiteHousePro have experienced this before (just search for "invalid argument supplied") and the cliche support-answer was always: "Update you PHP-Installation, if that doesn't help, reinstall your blog".
Well, in this case I could narrow the problem down to a very popular plugin, namely W3 Total Cache. The weird thing is that I had been using the theme with this plugin for months without any hiccups. I therefore can't put a finger on when exactly the problem started occurring.
Has anyone made similar experiences or knows of a fix? A dev statement would also be nice!