Recipe Engine Added, not quite done yet tho.

recipes/RegistrationError.java

@@ -0,0 +1,12 @@
+package appeng.recipes;
+
+public class RegistrationError extends Exception
+{
+
+	private static final long serialVersionUID = -6602870588617670263L;
+
+	public RegistrationError(String n) {
+		super( n );
+	}
+
+}