My site suddenly stopped working this morning, and I don't know why. We haven't changed any of the codes, and I can still access the administrator side of the page, but when I try to view, preview, or visit a page within a site, I get a 500 server error.
What's strange is that it still displays everything as normal in Firefox and Mosaic browsers, but displays the error in Safari, IE, and Google Chrome.
Everything worked on all browsers just a few days ago. Now it won't. What's going on?