void writeDefaultsConfig() {
try {
File lastModelFile = getLastModelFile();
DataOutputStream out = new DataOutputStream(
new FileOutputStream(lastModelFile));
out.writeBoolean(lastModelDir != null);
if (lastModelDir != null) {
out.writeUTF(lastModelDir.getAbsolutePath());
}
out.writeBoolean(compiledDir != null);
if (compiledDir != null) {