Oh, that repeating warning shouldn't be happening any more.
I had turned on visible errors in a futile attempt to try to debug something else.
I'm not sure about the content encoding error, though. That looks like a web browser error, not something php would have coughed up. Let me know if you see it again, and the search terms you were using.
On second thought, now that I think about it, those warnings themselves may have been triggering that first error, because they were probably sent before the rest of the page, when compression wasn't set up yet.
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