The config file should not cause any crashes no matter what it contains. The filename it's looking for is just "config" without an extension or the quotes. I recently added support for pen pressure and that requires the files "libjpen-2-3.jnilib" and "jpen-2-3-64.dll" that should be included in the zip to be in the same folder as the .jar file or it might crash. I'll look into this later.