GETTING NULL POINTER EXCPTION

Hi,

I am using BIRT 2.2.2 for my application. I have one report, which is running correctly in designer, but getting null pointer exception in application. I have also tried by defining column width, but still getting
the same error. Please help

I am getting below error in log:

Caused by: java.lang.NullPointerException
at org.eclipse.birt.report.engine.emitter.excel.DataCache.getColumnSize(DataCache.java:80)
at org.eclipse.birt.report.engine.emitter.excel.DataCache.insertColumns(DataCache.java:56)
at org.eclipse.birt.report.engine.emitter.excel.layout.ExcelLayoutEngine.addTable(ExcelLayoutEngine.java:101)
at org.eclipse.birt.report.engine.emitter.excel.ExcelEmitter.startTable(ExcelEmitter.java:130)
at org.eclipse.birt.report.engine.emitter.CompositeContentEmitter.startTable(CompositeContentEmitter.java:300)
at org.eclipse.birt.report.engine.layout.html.HTMLTableLayoutNoNestEmitter.startTable(HTMLTableLayoutNoNestEmitter.java:72)
at org.eclipse.birt.report.engine.layout.html.HTMLTableLayoutNoNestEmitter.startTable(HTMLTableLayoutNoNestEmitter.java:72)
at org.eclipse.birt.report.engine.emitter.ContentEmitterUtil.startContent(ContentEmitterUtil.java:48)
at org.eclipse.birt.report.engine.layout.html.buffer.DummyPageBuffer.startContainer(DummyPageBuffer.java:88)
at org.eclipse.birt.report.engine.layout.html.HTMLTableLM.start(HTMLTableLM.java:87)
at org.eclipse.birt.report.engine.layout.html.HTMLAbstractLM.layout(HTMLAbstractLM.java:137)
at org.eclipse.birt.report.engine.layout.html.HTMLBlockStackingLM.layoutNodes(HTMLBlockStackingLM.java:68)
at org.eclipse.birt.report.engine.layout.html.HTMLStackingLM.layoutChildren(HTMLStackingLM.java:24)
at org.eclipse.birt.report.engine.layout.html.HTMLAbstractLM.layout(HTMLAbstractLM.java:138)
at org.eclipse.birt.report.engine.layout.html.HTMLInlineStackingLM.resumeLayout(HTMLInlineStackingLM.java:107)
at org.eclipse.birt.report.engine.layout.html.HTMLInlineStackingLM.layoutNodes(HTMLInlineStackingLM.java:155)
at org.eclipse.birt.report.engine.layout.html.HTMLStackingLM.layoutChildren(HTMLStackingLM.java:24)
at org.eclipse.birt.report.engine.layout.html.HTMLAbstractLM.layout(HTMLAbstractLM.java:138)
at org.eclipse.birt.report.engine.layout.html.HTMLBlockStackingLM.layoutNodes(HTMLBlockStackingLM.java:68)
at org.eclipse.birt.report.engine.layout.html.HTMLStackingLM.layoutChildren(HTMLStackingLM.java:24)
at org.eclipse.birt.report.engine.layout.html.HTMLTableLM.layoutChildren(HTMLTableLM.java:76)
at org.eclipse.birt.report.engine.layout.html.HTMLAbstractLM.layout(HTMLAbstractLM.java:138)
at org.eclipse.birt.report.engine.layout.html.HTMLBlockStackingLM.layoutNodes(HTMLBlockStackingLM.java:68)
at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout(HTMLPageLM.java:85)
at org.eclipse.birt.report.engine.layout.html.HTMLReportLayoutEngine.layout(HTMLReportLayoutEngine.java:106)
at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.doRun(RunAndRenderTask.java:140)
... 31 more