... Have you tried expanding the file on an OS X-based machine? That often works for me, particularly when the .sit file is registered as a PC document.

Click to expand...

Thank you for the tip. The version of Expander 7 that I used was the OS X variant of 7.0.3 under 10.4.11. It was a little more informative than other versions of Expander/StuffIt and so on, telling me about an internal (downloaded) file error: 17523.

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