FileLoc: C:/Users/Eagle/weco
Exception in thread "Thread-17" java.lang.IllegalArgumentException: Illegal group reference
        at java.util.regex.Matcher.appendReplacement(Unknown Source)
        at java.util.regex.Matcher.replaceAll(Unknown Source)
        at java.lang.String.replaceAll(Unknown Source)
        at weco.main.GUI$3$1.run(GUI.java:636)
        at java.lang.Thread.run(Unknown Source)