Hello, I made a report (with several subreports) using iReport 4.8.0, and export it as Runnable .jar (with Eclipse). I can run it with a MS-DOS command, and all is running well in my computer, and in some others computers. But, in one computer, when I execute the report, i have an exception : Exception in thread "main" java.lang.NoClassDefFoundError : org/codehaus/groovy/runtime/DefaultGroovyMethods In iReport options, I use langage Java (and not language Groovy). Can someone explain me that ? Thanks a lot