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Customising the Yellowfin installer involves adding certain files to the installer. To do this, you should extract the contents of the installer, add the files in the correct location in the installer's installer’s file structure, and then re-create the jar archive.
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The Windows executable installer file cannot be modified in this way. To create a modified Windows installer, first create a modified .jar installer as above, then use Launch4J to convert it to an executable file.
See http://launch4j.sourceforge.net/
for more information.
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