NPE in jlrMethodGetParameterAnnotations

[longwa]

With Grails 2.5.5, seemingly randomly I will get the following error. I've seen it for several different scenarios but this stack is coming from a simple change to a Grails Service with no inheritance, traits, etc.

Caused by: java.lang.NullPointerException
        at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodGetParameterAnnotations(ReflectiveInterceptor.java:1031)
        at org.codehaus.groovy.vmplugin.v5.Java5.configureClassNode(Java5.java:365)
        at org.codehaus.groovy.ast.ClassNode.lazyClassInit(ClassNode.java:265)
        at org.codehaus.groovy.ast.ClassNode.getUnresolvedSuperClass(ClassNode.java:1004)
        at org.codehaus.groovy.ast.ClassNode.getUnresolvedSuperClass(ClassNode.java:999)
        at org.codehaus.groovy.ast.ClassNode.getSuperClass(ClassNode.java:993)
        at org.codehaus.groovy.ast.ClassNode.isDerivedFrom(ClassNode.java:936)
        at org.codehaus.groovy.classgen.asm.InvocationWriter.castToNonPrimitiveIfNecessary(InvocationWriter.java:858)
        at org.codehaus.groovy.classgen.asm.OperandStack.doConvertAndCast(OperandStack.java:347)
        at org.codehaus.groovy.classgen.asm.OperandStack.doGroovyCast(OperandStack.java:282)
        at org.codehaus.groovy.classgen.asm.BinaryExpressionHelper.evaluateEqual(BinaryExpressionHelper.java:344)
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitDeclarationExpression(AsmClassGenerator.java:633)
        at org.codehaus.groovy.ast.expr.DeclarationExpression.visit(DeclarationExpression.java:89)
        at org.codehaus.groovy.classgen.asm.StatementWriter.writeExpressionStatement(StatementWriter.java:607)
        at org.codehaus.groovy.classgen.asm.OptimizingStatementWriter.writeExpressionStatement(OptimizingStatementWriter.java:357)
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitExpressionStatement(AsmClassGenerator.java:620)
        at org.codehaus.groovy.ast.stmt.ExpressionStatement.visit(ExpressionStatement.java:42)
        at org.codehaus.groovy.classgen.asm.StatementWriter.writeBlockStatement(StatementWriter.java:84)
        at org.codehaus.groovy.classgen.asm.OptimizingStatementWriter.writeBlockStatement(OptimizingStatementWriter.java:158)
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitBlockStatement(AsmClassGenerator.java:566)
        at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:71)
        at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:104)
        at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:115)
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitStdMethod(AsmClassGenerator.java:430)
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitConstructorOrMethod(AsmClassGenerator.java:387)
        at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:126)
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitMethod(AsmClassGenerator.java:507)
        at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1086)
        at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:53)
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitClass(AsmClassGenerator.java:233)

We are using the Oracle JVM on OSX (El Capitan) with Grails 2.5.5: java version "1.8.0_91" Java(TM) SE Runtime Environment (build 1.8.0_91-b14) Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)

Once this occurs, I have to restart my server as reloading no longer works properly.