Cannot run Search on Forms

System

TS 6.5 SP2

I'm trying to run TS Search and from the "Content type" drop down list, I select "Forms" instead of "All Content" and I get an error message with the following stack behind it. What should I look for?

java.lang.NullPointerException
at com.interwoven.ui.formspub.utils.TemplateManagerImpl$FileSystemFilter.filterCategories(TemplateManagerImpl.java:890)
at com.interwoven.ui.formspub.utils.TemplateManagerImpl.getCategories(TemplateManagerImpl.java:168)
at com.interwoven.ui.formspub.utils.TemplateManagerImpl.getTypes(TemplateManagerImpl.java:238)
at com.interwoven.ui.formspub.utils.TemplateManagerImpl.getTemplateTypes(TemplateManagerImpl.java:261)
at com.interwoven.ui.search.CustomAttributeHelper.processCustomAttributes(CustomAttributeHelper.java:174)
at com.interwoven.ui.search.ccpro.AdvancedSearchCommand.execute(AdvancedSearchCommand.java:436)
at com.interwoven.ui.base.impl.command.CommandHandler.doExecuteCommand(CommandHandler.java:865)
at com.interwoven.ui.base.impl.command.CommandHandler.tryRunCommandDescriptor(CommandHandler.java:713)
at com.interwoven.ui.base.impl.command.CommandHandler.tryRunCommandID(CommandHandler.java:596)
at com.interwoven.ui.base.impl.command.CommandHandler.runCommandLoop(CommandHandler.java:240)
at com.interwoven.ui.base.impl.command.CommandServlet.doGet(CommandServlet.java:244)
at com.interwoven.ui.base.impl.command.CommandServlet.doPost(CommandServlet.java:335)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.interwoven.ui.base.impl.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:206)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.interwoven.ui.base.util.SetRequestEncodingFilter.doFilter(SetRequestEncodingFilter.java:105)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)