Some users have already complained because they tried to download the JADE software several times to their NT system and every time it appeared to download the ZIP files just fine. However, when they used the WINZIP program to extract the files, all they got were file and directory names, where the files were empty (0 bytes).
We use the jar program to create the distribution files and apparently it has some incompatibilities with some versions of winzip. Usually the problem disappears if you use also jar to unzip your files The command is very simple:
jar xvf "name of the zip file"
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