Net.sf.jasperreports.engine.JRException: Too many groovy classes were generated

Assuntos Gerais
#1

Pessoal,

Eu estava tendo dificuldades em compilar um relatório no iReport 3.7.0, mesmo a query tendo sido testada no Oracle 10g e estando absolutamente certa.
Aí, resolvi então, desinstalar e instalar novamente a mesma versão do iReport.
Agora, quando tento compilcar o relatório, está aparecendo a seguinte mensagem de erro.

Compilation exceptions: com.jaspersoft.ireport.designer.compiler.ErrorsCollector@118a7e0  net.sf.jasperreports.engine.JRException: Too many groovy classes were generated. Please make sure that you don't use Groovy features such as closures that are not supported by this report compiler.  at net.sf.jasperreports.compilers.JRGroovyCompiler.compileUnits(JRGroovyCompiler.java:100) at net.sf.jasperreports.engine.design.JRAbstractCompiler.compileReport(JRAbstractCompiler.java:188) at net.sf.jasperreports.engine.JasperCompileManager.compileReport(JasperCompileManager.java:215) at net.sf.jasperreports.engine.JasperCompileManager.compileReportToFile(JasperCompileManager.java:131) at com.jaspersoft.ireport.designer.compiler.IReportCompiler.run(IReportCompiler.java:510)     at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997) 
Compilation running time: 2.312

Será que alguém poderia me ajudar com este probleminha ?
Agradece,

Max Carvalho

#2