Show Saved Filter causes exception in rendering portlet.

To reproduce this issue - follow these steps:

1. From the Home page - select "Configure your Dashboard".
2. Select "Add".
3. Select "Show Saved Filter" and click the "Add" button.
4. Select options fopr the filter and click "Save".
5. Select the Home page and note that the following error message is displayed in place of the portlet:

Error rendering /portlets/dashboard/savedfilter.jsp: /home/keithb/src/atlassian/jira/resin/work/portlets/_dashboard/_savedfilterjsp.java:0:0:0:0: Semantic Warning: The file "/usr/java/j2sdk1.4.2/jre/classes" is not a valid directory. /home/keithb/src/atlassian/jira/resin/work/_portlets/_dashboard/_savedfilter_jsp.java:0:0:0:0: Semantic Warning: The file "/usr/java/j2sdk1.4.2/jre/lib/i18n.jar" does not exist or else is not a valid zip file. /portlets/dashboard/savedfilter.jsp:6: Semantic Error: Ambiguous invocation of method "findValue". At least two methods are accessible from here: "java.lang.Object findValue(java.lang.String $1) throws java.lang.IllegalArgumentException;" declared in type "webwork.util.ValueStack" and "java.lang.Object findValue(webwork.util.Query $1) throws java.lang.IllegalArgumentException;" declared in type "webwork.util.ValueStack". .
Removing and recreating this portlet may solve the problem.