>>Maybe the base problem is that one or more files you're trying to zip are corrupted on-disk, so that causes problems with WinZip. If that's the case, you could experiment with trying to read the source file(s) before zipping them.
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>Here is attached the CRC check failed.
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>I can read the file but the extract fails.
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>This is from the WinZip interface. So, the WinZip command line utility would also fail like that when running. Usually, the WinZip command line utility would dump everything into the standard error input, output, error as in the way I have defined it. However, this one is falling out of the exception and causes a high level crash.
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>>Along the same lines, another possibility is that files are in use by other users or processes when you try to zip them.
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>This is not the case. I moved three files like that into a test server to make some tests and the files are really corrupted.

I think I misunderstood. I thought you were adding files to a zip archive. It sounds like you are trying to extract files from an archive, and either the archive itself, or one or more of the files it contains, are seemingly corrupt?