>>Using VFP Compression, when compressing files larger than 3 GB it appears that the zip file it produces is corrupted and cannot be unzipped.
>>It does not display any error, only when trying to unzip the file it gives the error that the file is corrupted. Is this a known issue or is there a work around or perhaps another tool that I could use to zip files larger than that?
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>Some questions:
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>- Are you using the latest version i.e. http://www.sweetpotatosoftware.com/spsblog/2008/12/08/VFPCompressionUpdateACoupleOfFixesAndASlightEnhancement.aspx
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>- With your "corrupted" result, is that using the UnZip functions in VFPCompression, or some other tool e.g. 7Zip?
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>- What happens if you zip a 3GB file with (say) 7Zip, then unzip it with VFPCompression?
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>- Are you using removable media e.g. USB hard drive or stick, as the ZIP file target? In that case it's a good idea to safely eject the media (which ensures anything that may be write-cached in RAM is committed to the medium). Failing to do so can cause corruption

Yes, it uses the latest version. To be sure I downloaded it again and run the procedure with the latest version.
The unzip fails with 7zip as well as zip, the zip file is clearly corrupted. Also has nothing to do with the media, which I tested on several different devices already. I believe it must be a limitation of VFPCompression.fll, but I wonder if anybody else uses this tool to zip large files.