Index: lams_tool_forum/conf/xdoclet/struts-actions.xml
===================================================================
diff -u -r86fab777fa621158cd635f297d3be6987b7d99f0 -r3125084d6fc9d84ba5d3fe729bf6b61c96c67e35
--- lams_tool_forum/conf/xdoclet/struts-actions.xml	(.../struts-actions.xml)	(revision 86fab777fa621158cd635f297d3be6987b7d99f0)
+++ lams_tool_forum/conf/xdoclet/struts-actions.xml	(.../struts-actions.xml)	(revision 3125084d6fc9d84ba5d3fe729bf6b61c96c67e35)
@@ -173,7 +173,7 @@
 			name="messageForm" 
 			validate="false" 
 			parameter="editTopic" 
-			scope="request">
+			scope="session">
 			<forward name="success" path="tiles:/learning/forum/editTopic" />
 		</action>
 		<action path="/learning/updateTopic"
@@ -182,12 +182,12 @@
 			validate="true" 
 			input="tiles:/learning/forum/editTopic"
 			parameter="updateTopic" 
-			scope="request">
+			scope="session">
 			<forward name="success" path="tiles:/learning/forum/viewTopic" />
 		</action>
 				
 		<action path="/learning/deleteAttachment"
-			type="org.lamsfoundation.lams.tool.forum.web.actions.AuthoringAction"
+			type="org.lamsfoundation.lams.tool.forum.web.actions.LearningAction"
 			name="messageForm" 
 			validate="false"
 			parameter="deleteAttachment"
Index: lams_tool_forum/src/java/org/lamsfoundation/lams/tool/forum/web/actions/LearningAction.java
===================================================================
diff -u -r86fab777fa621158cd635f297d3be6987b7d99f0 -r3125084d6fc9d84ba5d3fe729bf6b61c96c67e35
--- lams_tool_forum/src/java/org/lamsfoundation/lams/tool/forum/web/actions/LearningAction.java	(.../LearningAction.java)	(revision 86fab777fa621158cd635f297d3be6987b7d99f0)
+++ lams_tool_forum/src/java/org/lamsfoundation/lams/tool/forum/web/actions/LearningAction.java	(.../LearningAction.java)	(revision 3125084d6fc9d84ba5d3fe729bf6b61c96c67e35)
@@ -367,7 +367,7 @@
     public ActionForward deleteAttachment(ActionMapping mapping, ActionForm form, HttpServletRequest request,
 			HttpServletResponse response) throws PersistenceException {
     	//get value from HttpSession
-		Long topicId = new Long(WebUtil.readLongParam(request,"topicId"));
+    	Long topicId = (Long) request.getSession().getAttribute("topicId");
 		Long versionID = new Long(WebUtil.readLongParam(request,"versionID"));
 		Long uuID = new Long(WebUtil.readLongParam(request,"uuid"));
 		forumService = getForumManager();
Index: lams_tool_forum/web/WEB-INF/struts-config.xml
===================================================================
diff -u -r86fab777fa621158cd635f297d3be6987b7d99f0 -r3125084d6fc9d84ba5d3fe729bf6b61c96c67e35
--- lams_tool_forum/web/WEB-INF/struts-config.xml	(.../struts-config.xml)	(revision 86fab777fa621158cd635f297d3be6987b7d99f0)
+++ lams_tool_forum/web/WEB-INF/struts-config.xml	(.../struts-config.xml)	(revision 3125084d6fc9d84ba5d3fe729bf6b61c96c67e35)
@@ -217,6 +217,14 @@
 			scope="request">
 			<forward name="success" path="tiles:/learning/forum/viewTopic" />
 		</action>
+		<action path="/learning/deleteAttachment"
+			type="org.lamsfoundation.lams.tool.forum.web.actions.LearningAction"
+			name="messageForm" 
+			validate="false"
+			parameter="deleteAttachment"
+			scope="session">
+			<forward name="success" path="tiles:/learning/forum/editTopic" />
+		</action>
 		<action path="/learning/message/deleteTopic"
 			type="org.lamsfoundation.lams.tool.forum.web.actions.ForumAction"
 			parameter="deleteTopic" 
Index: lams_tool_forum/web/jsps/learning/message/topiceditform.jsp
===================================================================
diff -u -r86fab777fa621158cd635f297d3be6987b7d99f0 -r3125084d6fc9d84ba5d3fe729bf6b61c96c67e35
--- lams_tool_forum/web/jsps/learning/message/topiceditform.jsp	(.../topiceditform.jsp)	(revision 86fab777fa621158cd635f297d3be6987b7d99f0)
+++ lams_tool_forum/web/jsps/learning/message/topiceditform.jsp	(.../topiceditform.jsp)	(revision 3125084d6fc9d84ba5d3fe729bf6b61c96c67e35)
@@ -26,7 +26,7 @@
 						<c:out value="${file.fileName}" />
 					</a>
 					<c:set var="deleteURL">
-							<html:rewrite page="/learning/deleteAttachment.do?uuid=${file.fileUuid}&versionID=${file.fileVersionId}&topicIndex=${topicIndex}"/>
+							<html:rewrite page="/learning/deleteAttachment.do?uuid=${file.fileUuid}&versionID=${file.fileVersionId}"/>
 					</c:set>
 					&nbsp;
 					<a href="<c:out value='${deleteURL}'/>">