ERROR - LoggingAdvice.invoke(118) |2013-03-26 06:59:19,638| An error occurred while executing this method. Error message: Unable to render results due to: java.io.IOException: Invalid header signature; read -2300849302551019537, expected -2226271756974174256
org.openmrs.module.reporting.report.renderer.RenderingException: Unable to render results due to: java.io.IOException: Invalid header signature; read -2300849302551019537, expected -2226271756974174256
	at org.openmrs.module.reporting.report.renderer.ExcelTemplateRenderer.render(ExcelTemplateRenderer.java:123)
	at org.openmrs.module.amrsreports.service.impl.QueuedReportServiceImpl.processQueuedReport(QueuedReportServiceImpl.java:137)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)