Error running process - opening form (FormFacade.java)

Hello! im am having a couple of problems with the operation of Joget and they must both have the same source:

1- whenever i save info via "Save Form Data" button and return later to the same form, i come to see that the saved data is not being shown

2- when a task is accepted and the form is opened, the Joget log shows this:

ERROR 28 Abr 2011 09:12:14 org.joget.form.model.FormFacade  - java.lang.ClassCas
tException: java.lang.Long cannot be cast to java.lang.String
java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.String
        at org.joget.form.model.FormFacade.getFormSubmittedData(FormFacade.java:
239)
        at org.joget.form.web.FormController.getData(FormController.java:252)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.
doInvokeMethod(HandlerMethodInvoker.java:413)
        at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.
invokeHandlerMethod(HandlerMethodInvoker.java:134)
        at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandle
rAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:310)
        at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandle
rAdapter.handle(AnnotationMethodHandlerAdapter.java:297)
        at org.joget.commons.spring.web.ParameterizedAnnotationMethodHandlerAdap
ter.handle(ParameterizedAnnotationMethodHandlerAdapter.java:30)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(Dispatch
erServlet.java:875)
        at org.springframework.web.servlet.DispatcherServlet.doService(Dispatche
rServlet.java:809)
        at org.springframework.web.servlet.FrameworkServlet.processRequest(Frame
workServlet.java:571)
        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServl
et.java:501)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain
.doFilter(FilterChainProxy.java:359)
        at org.springframework.security.intercept.web.FilterSecurityInterceptor.
invoke(FilterSecurityInterceptor.java:109)
        at org.springframework.security.intercept.web.FilterSecurityInterceptor.
doFilter(FilterSecurityInterceptor.java:83)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain
.doFilter(FilterChainProxy.java:371)
        at org.springframework.security.ui.SessionFixationProtectionFilter.doFil
terHttp(SessionFixationProtectionFilter.java:67)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringS
ecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain
.doFilter(FilterChainProxy.java:371)
        at org.joget.workflow.security.WorkflowNtlmProcessingFilter.doFilterHttp
(WorkflowNtlmProcessingFilter.java:52)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringS
ecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain
.doFilter(FilterChainProxy.java:371)
        at org.springframework.security.ui.ExceptionTranslationFilter.doFilterHt
tp(ExceptionTranslationFilter.java:101)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringS
ecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain
.doFilter(FilterChainProxy.java:371)
        at org.springframework.security.providers.anonymous.AnonymousProcessingF
ilter.doFilterHttp(AnonymousProcessingFilter.java:105)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringS
ecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain
.doFilter(FilterChainProxy.java:371)
        at org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp
(AbstractProcessingFilter.java:271)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringS
ecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain
.doFilter(FilterChainProxy.java:371)
        at org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp
(AbstractProcessingFilter.java:271)
        at org.joget.workflow.security.WorkflowHttpAuthProcessingFilter.doFilter
Http(WorkflowHttpAuthProcessingFilter.java:39)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringS
ecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain
.doFilter(FilterChainProxy.java:371)
        at org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(Logo
utFilter.java:89)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringS
ecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain
.doFilter(FilterChainProxy.java:371)
        at org.springframework.security.context.HttpSessionContextIntegrationFil
ter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringS
ecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain
.doFilter(FilterChainProxy.java:371)
        at org.springframework.security.util.FilterChainProxy.doFilter(FilterCha
inProxy.java:174)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(D
elegatingFilterProxy.java:236)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(Delegat
ingFilterProxy.java:167)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
        at org.springframework.web.filter.CharacterEncodingFilter.doFilterIntern
al(CharacterEncodingFilter.java:96)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerR
equestFilter.java:76)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:128)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:286)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:845)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ss(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:44
7)
        at java.lang.Thread.run(Thread.java:619)