Detailed information:

    Error number 0 in 11: Uncaught exception
Wrapped Exception: Could not initialize class javax.imageio.ImageTypeSpecifier
com.xpn.xwiki.XWikiException: Error number 0 in 11: Uncaught exception
Wrapped Exception: Could not initialize class javax.imageio.ImageTypeSpecifier
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:308)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:128)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.trumbull.xwiki.web.WeblogicCookieFilter.doFilter(WeblogicCookieFilter.java:37)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:120)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
	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:222)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1008)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:701)
Caused by: java.lang.NoClassDefFoundError: Could not initialize class javax.imageio.ImageTypeSpecifier
	at com.sun.imageio.plugins.gif.GIFImageReader.getImageTypes(GIFImageReader.java:258)
	at com.sun.imageio.plugins.gif.GIFImageReader.read(GIFImageReader.java:847)
	at org.apache.xmlgraphics.image.loader.impl.imageio.ImageLoaderImageIO.loadImage(ImageLoaderImageIO.java:127)
	at org.apache.xmlgraphics.image.loader.pipeline.ImageProviderPipeline.execute(ImageProviderPipeline.java:154)
	at org.apache.xmlgraphics.image.loader.pipeline.ImageProviderPipeline.execute(ImageProviderPipeline.java:99)
	at org.apache.xmlgraphics.image.loader.ImageManager.getImage(ImageManager.java:268)
	at org.apache.fop.render.rtf.RTFHandler.putGraphic(RTFHandler.java:1148)
	at org.apache.fop.render.rtf.RTFHandler.image(RTFHandler.java:1064)
	at org.apache.fop.render.rtf.RTFHandler.invokeDeferredEvent(RTFHandler.java:1492)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1640)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1694)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1663)
	at org.apache.fop.render.rtf.RTFHandler.endPageSequence(RTFHandler.java:271)
	at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:120)
	at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:349)
	at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:177)
	at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
	at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
	at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
	at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:485)
	at com.xpn.xwiki.pdf.impl.PdfExportImpl.renderXSLFO(PdfExportImpl.java:447)
	at com.xpn.xwiki.pdf.impl.PdfExportImpl.exportXHTML(PdfExportImpl.java:392)
	at com.xpn.xwiki.pdf.impl.PdfExportImpl.exportHtml(PdfExportImpl.java:288)
	at com.xpn.xwiki.pdf.impl.PdfExportImpl.export(PdfExportImpl.java:274)
	at com.xpn.xwiki.web.ExportAction.export(ExportAction.java:208)
	at com.xpn.xwiki.web.ExportAction.render(ExportAction.java:64)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:285)
	... 41 more


Wrapped Exception:

java.lang.NoClassDefFoundError: Could not initialize class javax.imageio.ImageTypeSpecifier
	at com.sun.imageio.plugins.gif.GIFImageReader.getImageTypes(GIFImageReader.java:258)
	at com.sun.imageio.plugins.gif.GIFImageReader.read(GIFImageReader.java:847)
	at org.apache.xmlgraphics.image.loader.impl.imageio.ImageLoaderImageIO.loadImage(ImageLoaderImageIO.java:127)
	at org.apache.xmlgraphics.image.loader.pipeline.ImageProviderPipeline.execute(ImageProviderPipeline.java:154)
	at org.apache.xmlgraphics.image.loader.pipeline.ImageProviderPipeline.execute(ImageProviderPipeline.java:99)
	at org.apache.xmlgraphics.image.loader.ImageManager.getImage(ImageManager.java:268)
	at org.apache.fop.render.rtf.RTFHandler.putGraphic(RTFHandler.java:1148)
	at org.apache.fop.render.rtf.RTFHandler.image(RTFHandler.java:1064)
	at org.apache.fop.render.rtf.RTFHandler.invokeDeferredEvent(RTFHandler.java:1492)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1640)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1694)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1715)
	at org.apache.fop.render.rtf.RTFHandler.recurseFONode(RTFHandler.java:1663)
	at org.apache.fop.render.rtf.RTFHandler.endPageSequence(RTFHandler.java:271)
	at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:120)
	at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:349)
	at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:177)
	at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
	at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
	at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
	at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:485)
	at com.xpn.xwiki.pdf.impl.PdfExportImpl.renderXSLFO(PdfExportImpl.java:447)
	at com.xpn.xwiki.pdf.impl.PdfExportImpl.exportXHTML(PdfExportImpl.java:392)
	at com.xpn.xwiki.pdf.impl.PdfExportImpl.exportHtml(PdfExportImpl.java:288)
	at com.xpn.xwiki.pdf.impl.PdfExportImpl.export(PdfExportImpl.java:274)
	at com.xpn.xwiki.web.ExportAction.export(ExportAction.java:208)
	at com.xpn.xwiki.web.ExportAction.render(ExportAction.java:64)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:285)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:128)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.trumbull.xwiki.web.WeblogicCookieFilter.doFilter(WeblogicCookieFilter.java:37)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:120)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
	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:222)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1008)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:701)