Whenever I open a large Groovy Project in Eclipse, with a lot of groovy files, it throws the following exception:
!ENTRY org.eclipse.core.resources 4 2 2017-07-31 11:06:35.428 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.resources". !STACK 0 java.lang.NullPointerException at org.codehaus.jdt.groovy.internal.compiler.ast.JDTAnnotationNode.createExpressionFor(JDTAnnotationNode.java:176) at org.codehaus.jdt.groovy.internal.compiler.ast.JDTAnnotationNode.createExpressionFor(JDTAnnotationNode.java:168) at org.codehaus.jdt.groovy.internal.compiler.ast.JDTAnnotationNode.ensureMembersInitialized(JDTAnnotationNode.java:153) at org.codehaus.jdt.groovy.internal.compiler.ast.JDTAnnotationNode.getMember(JDTAnnotationNode.java:70) at org.codehaus.groovy.vmplugin.v5.Java5.configureAnnotationFromDefinition(Java5.java:246) at org.codehaus.groovy.vmplugin.v5.Java5.configureAnnotation(Java5.java:266) at org.codehaus.groovy.classgen.AnnotationVisitor.visit(AnnotationVisitor.java:81) at org.codehaus.groovy.classgen.ExtendedVerifier.visitAnnotation(ExtendedVerifier.java:240) at org.codehaus.groovy.classgen.ExtendedVerifier.visitAnnotations(ExtendedVerifier.java:127) at org.codehaus.groovy.classgen.ExtendedVerifier.visitConstructorOrMethod(ExtendedVerifier.java:91) at org.codehaus.groovy.classgen.ExtendedVerifier.visitMethod(ExtendedVerifier.java:84) at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1186) at org.codehaus.groovy.classgen.ExtendedVerifier.visitClass(ExtendedVerifier.java:72) at org.codehaus.groovy.control.CompilationUnit$6.call(CompilationUnit.java:789) at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1099) at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:588) at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:566) at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:543) at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyCompilationUnitDeclaration.processToPhase(GroovyCompilationUnitDeclaration.java:217) at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyCompilationUnitDeclaration.generateCode(GroovyCompilationUnitDeclaration.java:321) at org.eclipse.jdt.internal.compiler.Compiler.process(Compiler.java:891) at org.eclipse.jdt.internal.compiler.ProcessTaskManager.run(ProcessTaskManager.java:141) at java.lang.Thread.run(Thread.java:745)

Eclipse:

• Eclipse IDE for Java Developers
• Version: Neon.3 Release (4.6.3)
• Build id: 20170314-1500
• Java: jdk1.8.0_112

groovy-eclipse

• Groovy Compiler 2.x
• Groovy-Eclipse Compilerless 2.9.2.xx-201707291445-e46
• JDT Core patch for Groovy-Eclipse plugin on Eclipse 4.6 2.9.2.xx-201707291445-e46