Hello, I am new to Drools. On starting to execute a simple program, eclipse gives the following stacktrace as error. I even included the org.eclipse.jdt that comes with eclipse, but it is still giving me error. Anybody please suggest the problem. I am using Drools 5.0 and its dependencies and Eclipse Helios java.lang.NoSuchMethodError: org.eclipse.jdt.internal.compiler.CompilationResult.getProblems()[Lorg/eclipse/jdt/core/compiler/CategorizedProblem; at org.drools.commons.jci.compilers.EclipseJavaCompiler$3.acceptResult(EclipseJavaCompiler.java:321) at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:335) at org.drools.commons.jci.compilers.EclipseJavaCompiler.compile(EclipseJavaCompiler.java:351) at org.drools.commons.jci.compilers.AbstractJavaCompiler.compile(AbstractJavaCompiler.java:51) at org.drools.rule.builder.dialect.java.JavaDialect.compileAll(JavaDialect.java:389) at org.drools.compiler.DialectCompiletimeRegistry.compileAll(DialectCompiletimeRegistry.java:56) at org.drools.compiler.PackageRegistry.compileAll(PackageRegistry.java:74) at org.drools.compiler.PackageBuilder.compileAll(PackageBuilder.java:690) at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:653) at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:290) at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:488) at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:25) at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:40) at com.sample.DroolsTest.main(DroolsTest.java:23) Thanks -- View this message in context: http://drools.46999.n3.nabble.com/org-eclipse-jdt-internal-compiler-Compi... Sent from the Drools: User forum mailing list archive at Nabble.com.