/*
* Method to validate source and target directory inputs on the GUI panel
* Also checks whether the upgrade path is supported or not.
*/
private boolean processArguments() {
ARG_source argSource = new ARG_source();
argSource.setRawParameters(dataCollectionPanel.getSourceDirPath());
if (argSource.isValidParameter()) {
argSource.exec();
} else {
// pop up error message
JOptionPane.showMessageDialog(this,
stringManager.getString("upgrade.gui.mainframe.invalidSourceMsg"),
stringManager.getString("upgrade.gui.mainframe.invalidSourceTitle"),