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Liferay 6.1 can't create previews for documents

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Carlos Durán, modified 7 Years ago.

Liferay 6.1 can't create previews for documents

New Member Posts: 21 Join Date: 11/5/14 Recent Posts
I have an Liferay 6.1 installation in two nodes using balancing mode.

The previsualization is working only for images, but doesn't work for docuements. I'm having this trace in the log:

12:37:53,818 WARN  [liferay/document_library_pdf_processor-1][PDFProcessorMessageListener:40] Unable to generate images for file version 102882
com.liferay.portal.kernel.process.ProcessException: java.util.concurrent.ExecutionException: java.io.InvalidClassException: com.liferay.portal.kernel.process.log.LoggingProcessCallable; local class incompatible: stream classdesc serialVersionUID = 6849489386883668845, local class serialVersionUID = 1
        at com.liferay.portal.kernel.process.ProcessExecutor.execute(ProcessExecutor.java:118)
        at com.liferay.portal.kernel.process.ProcessExecutor.execute(ProcessExecutor.java:53)
        at com.liferay.portlet.documentlibrary.util.PDFProcessorImpl._generateImagesIM(PDFProcessorImpl.java:524)
        at com.liferay.portlet.documentlibrary.util.PDFProcessorImpl._generateImagesIM(PDFProcessorImpl.java:449)
        at com.liferay.portlet.documentlibrary.util.PDFProcessorImpl._generateImages(PDFProcessorImpl.java:418)
        at com.liferay.portlet.documentlibrary.util.PDFProcessorImpl._generateImages(PDFProcessorImpl.java:381)
        at com.liferay.portlet.documentlibrary.util.PDFProcessorImpl.generateImages(PDFProcessorImpl.java:95)
        at com.liferay.portlet.documentlibrary.util.PDFProcessorUtil.generateImages(PDFProcessorUtil.java:35)
        at com.liferay.portlet.documentlibrary.messaging.PDFProcessorMessageListener.doReceive(PDFProcessorMessageListener.java:36)
        at com.liferay.portal.kernel.messaging.BaseMessageListener.receive(BaseMessageListener.java:26)
        at com.liferay.portal.kernel.messaging.InvokerMessageListener.receive(InvokerMessageListener.java:72)
        at com.liferay.portal.kernel.messaging.SerialDestination$1.run(SerialDestination.java:65)
        at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask._runTask(ThreadPoolExecutor.java:678)
        at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask.run(ThreadPoolExecutor.java:589)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.ExecutionException: java.io.InvalidClassException: com.liferay.portal.kernel.process.log.LoggingProcessCallable; local class incompatible: stream classdesc serialVersionUID = 6849489386883668845, local class serialVersionUID = 1
        at java.util.concurrent.FutureTask.report(FutureTask.java:122)
        at java.util.concurrent.FutureTask.get(FutureTask.java:188)
        at com.liferay.portal.kernel.process.ProcessExecutor.execute(ProcessExecutor.java:93)
        ... 14 more
Caused by: java.io.InvalidClassException: com.liferay.portal.kernel.process.log.LoggingProcessCallable; local class incompatible: stream classdesc serialVersionUID = 6849489386883668845, local class serialVersionUID = 1
        at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:617)
        at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1622)
        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
        at com.liferay.portal.kernel.process.ProcessExecutor$SubprocessReactor.call(ProcessExecutor.java:286)
        at com.liferay.portal.kernel.process.ProcessExecutor$SubprocessReactor.call(ProcessExecutor.java:1)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        ... 1 more


Any idea about this issue?

Regards.