unable to resolve class net.sf.jasperreports.compilers.GroovyEvaluator

[nessrineselmi215]

I'm using Jasper Studio 5.5.1 trying to open my .JRXML files which were created using iReport 5.5.0.

The reports are working correctly in iReport, in Jasper Studio I create a brand new Jasper project and copy the JRXML files in. However I come across the following error when trying to compile:

net.sf.jasperreports.engine.JRException: Errors were encountered when compiling report expressions class file:

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:

calculator_Receipt_1397035857101_637810: 18: unable to resolve class net.sf.jasperreports.compilers.GroovyEvaluator 

 @ line 18, column 1.

calculator_Receipt_Receipt_1397035857101_637810: 18: unable to resolve class net.sf.jasperreports.compilers.GroovyEvaluator 

 @ line 18, column 1.

calculator_Receipt_dataset1_1397035857101_637810: 18: unable to resolve class net.sf.jasperreports.compilers.GroovyEvaluator 

 @ line 18, column 1.

3 errors

 

at net.sf.jasperreports.compilers.JRGroovyCompiler.compileUnits(JRGroovyCompiler.java:113)

at net.sf.jasperreports.engine.design.JRAbstractCompiler.compileReport(JRAbstractCompiler.java:201)

at net.sf.jasperreports.eclipse.builder.JasperReportCompiler.compileReport(JasperReportCompiler.java:172)

at com.jaspersoft.studio.editor.preview.view.control.ReportControler.compileJasperDesign(ReportControler.java:398)

at com.jaspersoft.studio.editor.preview.view.control.ReportControler.access$14(ReportControler.java:386)

at com.jaspersoft.studio.editor.preview.view.control.ReportControler$4.run(ReportControler.java:319)

at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

 

I check my class path and Jasper Libraries is included. I suspect the Groovy evaluator is needed for expressions such as: