Help! Just tried to unarchive a 338 MB .zip folder that I archived in June using the Create Archive command under Finder/File -- and get the above error. More recent archived folders open fine. When it didn't work by double clicking, I tried to unarchive using Stuffit Expander but it just sits there. Yes I have most of it backed up on an external hard drive ... but not all. Using Mac OS 10.4.10 Unable to find how to locate the problem on Apple support. Solution, work around, alternate ways to find help on the support site? Thanks!