Can't build JavaHelp
Problems with generation of Java Help can be due to issues with the Java on your system Try downloading and installing these components from the links below:
JRE from http://java.sun.com/products/archive/jdk/1.2.1_004/jre/index.html
JDK from http://java.sun.com/products/archive/j2se/5.0_03/index.html
Install both of these to their default locations and try re-generating your project.