--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hg4j/src/main/java/org/tmatesoft/hg/core/HgBadStateException.java	Tue May 10 10:52:53 2011 +0200
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2011 TMate Software Ltd
+ *  
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * For information on how to redistribute this software under
+ * the terms of a license other than GNU General Public License
+ * contact TMate Software at support@hg4j.com
+ */
+package org.tmatesoft.hg.core;
+
+/**
+ * hg4j's own internal error or unexpected state.
+ * 
+ * @author Artem Tikhomirov
+ * @author TMate Software Ltd.
+ */
+@SuppressWarnings("serial")
+public class HgBadStateException extends RuntimeException {
+
+	// FIXME quick-n-dirty fix, don't allow exceptions without a cause
+	public HgBadStateException() {
+		super("Internal error");
+	}
+
+	public HgBadStateException(String message) {
+		super(message);
+	}
+
+	public HgBadStateException(Throwable cause) {
+		super(cause);
+	}
+}