2013-03-07 08:35:17,491 WARN  .admincentral.field.upload.AbstractUploadFileField: Upload failed for file my-image.jpg 
Mar 7, 2013 8:35:17 AM com.vaadin.server.DefaultErrorHandler doDefault
SEVERE: 
com.vaadin.server.UploadException: Upload failed
	at com.vaadin.server.AbstractCommunicationManager.streamToReceiver(AbstractCommunicationManager.java:453)
	at com.vaadin.server.AbstractCommunicationManager.doHandleXhrFilePost(AbstractCommunicationManager.java:337)
	at com.vaadin.server.AbstractCommunicationManager.handleFileUpload(AbstractCommunicationManager.java:2677)
	at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:306)
	at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:201)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at info.magnolia.cms.filters.ServletDispatchingFilter.doFilter(ServletDispatchingFilter.java:123)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:67)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.filters.VirtualUriFilter.doFilter(VirtualUriFilter.java:70)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.module.cache.executor.Bypass.processCacheRequest(Bypass.java:58)
	at info.magnolia.module.cache.executor.CompositeExecutor.processCacheRequest(CompositeExecutor.java:66)
	at info.magnolia.module.cache.filter.CacheFilter.doFilter(CacheFilter.java:153)
	at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter(I18nContentSupportFilter.java:76)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.filters.RangeSupportFilter.doFilter(RangeSupportFilter.java:84)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:60)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.security.SecurityCallbackFilter.doFilter(SecurityCallbackFilter.java:86)
	at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:93)
	at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.module.templatingkit.filters.SiteMergeFilter.doFilter(SiteMergeFilter.java:99)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.filters.MultiChannelFilter.doFilter(MultiChannelFilter.java:83)
	at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:75)
	at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:93)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
	at info.magnolia.module.devicedetection.filter.DeviceDetectionFilter.doFilter(DeviceDetectionFilter.java:73)
	at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:102)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:131)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
	at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:67)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
	at info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter(SafeDestroyMgnlFilterWrapper.java:108)
	at info.magnolia.cms.filters.MgnlFilterDispatcher.doDispatch(MgnlFilterDispatcher.java:67)
	at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:108)
	at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:94)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:185)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:151)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:269)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
	at java.lang.Thread.run(Thread.java:680)
Caused by: com.vaadin.data.util.converter.Converter$ConversionException: Cannot convert class java.lang.String to class java.lang.Long
	at info.magnolia.ui.vaadin.integration.jcr.DefaultProperty.setValue(DefaultProperty.java:73)
	at info.magnolia.ui.admincentral.file.FileItemWrapperImpl.populateJcrItemProperty(FileItemWrapperImpl.java:132)
	at info.magnolia.ui.admincentral.field.upload.AbstractUploadFileField.uploadFinished(AbstractUploadFileField.java:589)
	at info.magnolia.ui.admincentral.field.upload.AbstractUploadFileField$2.streamingFinished(AbstractUploadFileField.java:298)
	at com.vaadin.ui.DragAndDropWrapper$ProxyReceiver.streamingFinished(DragAndDropWrapper.java:328)
	at com.vaadin.server.AbstractCommunicationManager.streamToReceiver(AbstractCommunicationManager.java:426)
	... 90 more