4.2 - 7021 : problem with upload of files in Slide

Exception when I try to upload a file in Slide (std install with HSQL DB). One file in the root/private directory and nother while creating a new directory under /shared/

4483469 [http-8080-Processor4] INFO - Processed [/jahia/Jahia/engineName/filemanager/op/edit/pid/6] user=[root] ip=[127.0.0.1] in [16ms]
4491125 [http-8080-Processor4] INFO - Processed [/jahia/Jahia/engineName/filemanager/op/edit/pid/6] user=[root] ip=[127.0.0.1] in [187ms]
4491219 [http-8080-Processor4] ERROR - Field -1 cannot be found in filesContainer1! fields.size=2
org.jahia.exceptions.JahiaException: Field -1 cannot be found in filesContainer1! fields.size=2, JahiaContainer : Field -1 cannot be found in filesContainer1! fields.size=2
at org.jahia.data.containers.JahiaContainer.getField(JahiaContainer.java:494)
at org.jahia.engines.addcontainer.AddContainer_Engine.processCurrentFields(AddContainer_Engine.java:951)
at org.jahia.engines.addcontainer.AddContainer_Engine.processCurrentScreen(AddContainer_Engine.java:403)
at org.jahia.engines.addcontainer.AddContainer_Engine.handleActions(AddContainer_Engine.java:247)
at org.jahia.operations.OperationManager.generatePage(OperationManager.java:330)
at org.jahia.operations.OperationManager.processPage(OperationManager.java:200)
at org.jahia.operations.OperationManager.handleOperations(OperationManager.java:179)
at org.jahia.bin.JahiaAction.execute(JahiaAction.java:50)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
at org.jahia.bin.Jahia.process(Jahia.java:1560)
at org.jahia.bin.Jahia.service(Jahia.java:864)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:200)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2358)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:133)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:127)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
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:595)
4491422 [http-8080-Processor2] INFO - Processed [/jahia/Jahia/engineName/addcontainer/op/edit/pid/6] user=[root] ip=[127.0.0.1] in [234ms]
4491516 [http-8080-Processor4] INFO - Processed [/jahia/Jahia/engineName/addcontainer/op/edit/pid/6] user=[root] ip=[127.0.0.1] in [313ms]
4515266 [http-8080-Processor2] INFO - Processed [/jahia/Jahia/engineName/addcontainer/op/edit/pid/6] user=[root] ip=[127.0.0.1] in [47ms]
layoutmanager.inc>Row count = 1
newportlets.jsp>Column count for row 0 = 1