Yeah, this whitelist approach isn't great.... I agree with Peter that we should just allow all files to be dropped and fall back on the existing behavior of displaying an error on the Mac and gibberish on Windows.

@adrocknaphobia - any thoughts? This is a change from the story criteria. The story says that only drops that have text files should be accepted, but there is no reliable (and fast) way to know if a file is a text file.