ConverterHelp.java has the hardcoded version numbers below.

% grep -n "1.4.2" ConverterHelp.java
31: "Version: 1.4.2" + newline + newline + newline +
254: " C:\\j2sdk1.4.2\\lib\\" + newline + newline +
257: " C:\\j2sdk1.4.2\\lib\\..\\bin\\java -jar htmlconverter.jar -gui" + newline + newline +
263: " C:\\j2sdk1.4.2\\bin" + newline + newline +
267: " cd /j2sdk1.4.2/bin" + newline +
299: " http://java.sun.com/j2se/1.4.2/docs/guide/plugin/developer_guide/html_converter_more.html."}
%

It's better to take the version numbers out from the resource file
for future releases.