Job was not built successfully

Job was not built successfully

Hi,
I'm using Talend TIS 6.1.1 Patch 1420 with JDK 1.8.0_77.
Another issue in the midst of so many other
Whichever the project and the job, I can't build any job :
      java.lang.Exception: Job was not built successfully, please check the logs for more details available on the workspace/.Java/lastGenerated.log
at org.talend.repository.ui.wizards.exportjob.scriptsmanager.BuildJobManager.buildJob(BuildJobManager.java:220)
at org.talend.repository.ui.wizards.exportjob.scriptsmanager.BuildJobManager.buildJobs(BuildJobManager.java:99)
at org.talend.repository.ui.wizards.exportjob.JobScriptsExportWizardPage.buildJobWithMaven(JobScriptsExportWizardPage.java:1481)
at org.talend.repository.ui.wizards.exportjob.JobScriptsExportWizardPage$8.run(JobScriptsExportWizardPage.java:1384)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:466)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:374)
--> the specified log file doesn't exit
--> Every explanation will be welcome, because it's VERY URGENT.
Thank's
Twelve Stars

Re: Job was not built successfully

Job run success from Studio?
Any other error (pop-up windows and etc)? 
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