EngineException

Normally my reports are running fine in BIRT 3.7.1.

But recently 2 applications are using the same BIRT Engine ... And since then

I am getting this exception ... how to solve this ???


org.eclipse.birt.report.engine.api.EngineException: Error happened while running the report.
at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.doRun(RunAndRenderTask.java:196)
at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.run(RunAndRenderTask.java:77)
Caused by: java.lang.NullPointerException
at org.eclipse.birt.report.engine.data.dte.ReportQueryBuilder$QueryBuilderVisitor.createParamBindings(ReportQueryBuilder.java:1670) at org.eclipse.birt.report.engine.data.dte.ReportQueryBuilder$QueryBuilderVisitor.addParamBinding(ReportQueryBuilder.java:1592)
at org.eclipse.birt.report.engine.data.dte.ReportQueryBuilder$QueryBuilderVisitor.createQuery(ReportQueryBuilder.java:1420)
at org.eclipse.birt.report.engine.data.dte.ReportQueryBuilder$QueryBuilderVisitor.visitTableItem(ReportQueryBuilder.java:913)
at org.eclipse.birt.report.engine.ir.TableItemDesign.accept(TableItemDesign.java:53)
at org.eclipse.birt.report.engine.data.dte.ReportQueryBuilder.build(ReportQueryBuilder.java:256)
at org.eclipse.birt.report.engine.data.dte.ReportQueryBuilder.build(ReportQueryBuilder.java:237)
at org.eclipse.birt.report.engine.data.dte.AbstractDataEngine.prepare(AbstractDataEngine.java:180)
at org.eclipse.birt.report.engine.executor.ReportExecutor.execute(ReportExecutor.java:122)
at org.eclipse.birt.report.engine.internal.executor.wrap.WrappedReportExecutor.execute(WrappedReportExecutor.java:60)
at org.eclipse.birt.report.engine.internal.executor.dup.SuppressDuplciateReportExecutor.execute(SuppressDuplciateReportExecutor.java:42)
at org.eclipse.birt.report.engine.internal.executor.wrap.WrappedReportExecutor.execute(WrappedReportExecutor.java:60)
at org.eclipse.birt.report.engine.internal.executor.l18n.LocalizedReportExecutor.execute(LocalizedReportExecutor.java:61)
at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.doRun(RunAndRenderTask.java:178)