diff -r 14dc2103a631 -r ed1c9f64298a trace/tracebuilder/com.nokia.tracebuilder.eventhandler/src/com/nokia/tracebuilder/eventhandler/EventListEntryLocationCountError.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trace/tracebuilder/com.nokia.tracebuilder.eventhandler/src/com/nokia/tracebuilder/eventhandler/EventListEntryLocationCountError.java	Wed Jun 23 14:35:40 2010 +0300
@@ -0,0 +1,82 @@
+/*
+* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+* An error that trace does not have or has more than one location
+*
+*/
+package com.nokia.tracebuilder.eventhandler;
+
+import com.nokia.trace.eventrouter.TraceEvent;
+import com.nokia.trace.eventview.TraceEventList;
+import com.nokia.tracebuilder.engine.TraceBuilderErrorMessages;
+import com.nokia.tracebuilder.engine.TraceLocationList;
+import com.nokia.tracebuilder.engine.TraceBuilderErrorCodes.TraceBuilderErrorCode;
+import com.nokia.tracebuilder.model.Trace;
+
+/**
+ * An error that trace does not have or has more than one location
+ * 
+ */
+class EventListEntryLocationCountError extends EventListEntryTraceObject {
+
+	/**
+	 * The event list
+	 */
+	private TraceEventList eventList;
+
+	/**
+	 * Constructor
+	 * 
+	 * @param eventList
+	 *            the event list
+	 * @param trace
+	 *            the trace
+	 */
+	EventListEntryLocationCountError(TraceEventList eventList, Trace trace) {
+		super(TraceEvent.ERROR, "", trace); //$NON-NLS-1$
+		String category = Messages
+				.getString("InvalidLocationEntryAdder.InvalidLocationEventCategory"); //$NON-NLS-1$
+		setCategory(category);
+		this.eventList = eventList;
+		update();
+	}
+
+	/**
+	 * Updates the description of this error
+	 */
+	void update() {
+		TraceLocationList list = getObject().getExtension(
+				TraceLocationList.class);
+		String msg;
+		if (list == null || list.getLocationCount() == 0) {
+			msg = TraceBuilderErrorMessages.getErrorMessage(
+					TraceBuilderErrorCode.TRACE_HAS_NO_LOCATIONS, null);
+		} else {
+			msg = TraceBuilderErrorMessages.getErrorMessage(
+					TraceBuilderErrorCode.TRACE_HAS_MULTIPLE_LOCATIONS, null);
+		}
+		setDescription(msg);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.nokia.tracebuilder.eventhandler.EventListEntryTraceObject#objectDeleted()
+	 */
+	@Override
+	public void objectDeleted() {
+		eventList.removeEntry(this);
+	}
+}
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