I have never taken the frequent offers from Smith Micro (at least a couple a week, probably because I have registered copies of 5 and 7 Deluxe, and am therefore on their database for receipt of spam) to upgrade. When I opined on Applefritter (the app. was then up to v.11) that I could see little advantage in the later versions there were several who concurred, and I see no claim by the current owners of Aladdin products that the compression/expansion software has changed much (except for compatibility with newer Mac OS X versions).
In the nature of things, your mileage may have varied, of course, but I use no OS more recent than 10.4.11. I have to suppose that the download that I wish to expand is intrinsically corrupt rather than just recalcitrant, and that my best hope is an alternative source of the driver.
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