Problem Locating log4j.properties File Now Fixed.

The problem with log4j finding it's property file in Processing has now been fixed.

log4j wasn't finding the file because the value passed by the dataPath("") statement doesn't include a closing \ character. The simple fix is to append it to the file name. Therefore the command becomes

PropertyConfigurator.configure(dataPath("")+"\\log4j.properties");

(The double \\ to print a single \ is required by java because a single \ has other purposes and can be read about here).