'Error loading files' in Workflows

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darkmstr

Hey guys, I've been looking for this weird problem on the web and haven't found anything 😕
The problem is when I tried to see the Workflows I've started this errror appears "Error loading files", after that I check out the catalina.out log and it shows me this:

2012-09-18 10:12:15,795  ERROR [extensions.webscripts.AbstractRuntime] [http-8080-36] Exception from executeScript - redirecting to status template error: 08180037 Wrapped Exception (with status template): null
org.springframework.extensions.webscripts.WebScriptException: 08180037 Wrapped Exception (with status template): null
   at org.springframework.extensions.webscripts.AbstractWebScript.createStatusException(AbstractWebScript.java:970)
   at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:171)
   at org.alfresco.repo.web.scripts.RepositoryContainer$2.execute(RepositoryContainer.java:393)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:388)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:462)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:500)
   at org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:316)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:372)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:209)
   at org.springframework.extensions.webscripts.servlet.WebScriptServlet.service(WebScriptServlet.java:118)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.alfresco.web.app.servlet.GlobalLocalizationFilter.doFilter(GlobalLocalizationFilter.java:58)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
   at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NullPointerException
   at org.activiti.engine.impl.bpmn.deployer.BpmnDeployer.deploy(BpmnDeployer.java:147)
   at org.activiti.engine.impl.persistence.deploy.DeploymentCache.deploy(DeploymentCache.java:37)
   at org.activiti.engine.impl.persistence.deploy.DeploymentCache.resolveProcessDefinition(DeploymentCache.java:78)
   at org.activiti.engine.impl.persistence.deploy.DeploymentCache.findDeployedProcessDefinitionById(DeploymentCache.java:52)
   at org.activiti.engine.impl.cmd.GetStartFormCmd.execute(GetStartFormCmd.java:40)
   at org.activiti.engine.impl.cmd.GetStartFormCmd.execute(GetStartFormCmd.java:30)
   at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
   at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)
   at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:42)
   at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
   at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:40)
   at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
   at org.activiti.engine.impl.FormServiceImpl.getStartFormData(FormServiceImpl.java:52)
   at org.alfresco.repo.workflow.activiti.ActivitiTypeConverter.convert(ActivitiTypeConverter.java:136)
   at org.alfresco.repo.workflow.activiti.ActivitiTypeConverter.convertToInstanceAndSetVariables(ActivitiTypeConverter.java:561)
   at org.alfresco.repo.workflow.activiti.ActivitiTypeConverter.convertAndSetVariables(ActivitiTypeConverter.java:183)
   at org.alfresco.repo.workflow.activiti.ActivitiTypeConverter.convert(ActivitiTypeConverter.java:170)
   at org.alfresco.repo.workflow.activiti.ActivitiTypeConverter.convert(ActivitiTypeConverter.java:315)
   at org.alfresco.repo.workflow.activiti.ActivitiTypeConverter.convert(ActivitiTypeConverter.java:285)
   at org.alfresco.repo.workflow.activiti.ActivitiWorkflowEngine.getWorkflowInstances(ActivitiWorkflowEngine.java:2122)
   at org.alfresco.repo.workflow.activiti.ActivitiWorkflowEngine.getActiveWorkflows(ActivitiWorkflowEngine.java:343)
   at org.alfresco.repo.workflow.WorkflowServiceImpl$1.apply(WorkflowServiceImpl.java:474)
   at org.alfresco.repo.workflow.WorkflowServiceImpl$1.apply(WorkflowServiceImpl.java:470)
   at org.alfresco.util.collections.CollectionUtils.transform(CollectionUtils.java:77)
   at org.alfresco.util.collections.CollectionUtils.transformFlat(CollectionUtils.java:152)
   at org.alfresco.repo.workflow.WorkflowServiceImpl.getActiveWorkflows(WorkflowServiceImpl.java:469)
   at org.alfresco.repo.workflow.WorkflowServiceImpl.getActiveWorkflows(WorkflowServiceImpl.java:427)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
   at org.alfresco.repo.security.permissions.impl.AlwaysProceedMethodInterceptor.invoke(AlwaysProceedMethodInterceptor.java:34)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.alfresco.repo.security.permissions.impl.ExceptionTranslatorMethodInterceptor.invoke(ExceptionTranslatorMethodInterceptor.java:46)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.alfresco.repo.audit.AuditMethodInterceptor.invoke(AuditMethodInterceptor.java:147)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
   at $Proxy67.getActiveWorkflows(Unknown Source)
   at org.alfresco.repo.web.scripts.workflow.WorkflowInstancesGet.buildModel(WorkflowInstancesGet.java:108)
   at org.alfresco.repo.web.scripts.workflow.AbstractWorkflowWebscript.executeImpl(AbstractWorkflowWebscript.java:80)
   at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:64)
   … 25 more
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darkmstr

Any help would be really appreciated