0
I'm getting an error message: "unsupported compression method 98"
when unzipping a file somebody sent to me. I've tried both an older version of WinZip, and 7-Zip 4.65.
(Update: I've also tried Windows own built-in Compressed Folders to open the archive (on Windows 7), but it reports Unspecified Error 0x80004005
on the archive. Presumably, that means Windows itself doesn't support this compression method, either.)
I've already asked the person to avoid using a non-standard compression method and re-send the file. I know WinZip (of which they are using a newer version) has compatibility options. But, I'm wondering:
What archiving utilities, other than WinZip, support this "compression method 98"?
In particular, is there a free and/or open source tool that supports that method? If not, why not? Is the method strictly proprietary to WinZip?
1
see http://www.winzip.com/comp_info.htm
– user12889 – 2010-06-09T05:49:15.580@user12889: Thanks. Yes, it's "PPMd" that I'm referring to. – Chris W. Rea – 2010-06-09T14:41:23.857