unexpected stacktrace

[romanesko]

Sometimes just appears:

18:27:15,476 ERROR ~

@6fi765hl6
RythmPlugin-1.0-b9h> Error enhancing class: Orders_print_html__R_T_C__

Oops: NotFoundException
An unexpected error occured caused by exception NotFoundException: field: __parent in Orders_print_html__R_T_C__

play.exceptions.UnexpectedException: Error in PropertiesEnhancer
    at play.classloading.enhancers.PropertiesEnhancer$1.edit(PropertiesEnhancer.java:177)
    at javassist.expr.ExprEditor.loopBody(ExprEditor.java:197)
    at javassist.expr.ExprEditor.doit(ExprEditor.java:90)
    at javassist.CtBehavior.instrument(CtBehavior.java:618)
    at play.classloading.enhancers.PropertiesEnhancer.enhanceThisClass(PropertiesEnhancer.java:135)
    at org.rythmengine.play.RythmPlugin$7.enhance(RythmPlugin.java:399)
    at org.rythmengine.internal.compiler.TemplateClass.enhance(TemplateClass.java:729)
    at org.rythmengine.internal.compiler.TemplateClass.compiled(TemplateClass.java:788)
    at org.rythmengine.internal.compiler.TemplateCompiler$2.acceptResult(TemplateCompiler.java:316)
    at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:478)
    at org.rythmengine.internal.compiler.TemplateCompiler.compile(TemplateCompiler.java:333)
    at org.rythmengine.internal.compiler.TemplateClass.compile(TemplateClass.java:672)
    at org.rythmengine.internal.compiler.TemplateClassLoader.loadTemplateClass(TemplateClassLoader.java:346)
    at org.rythmengine.internal.compiler.TemplateClassLoader.loadClass(TemplateClassLoader.java:254)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:2413)
    at java.lang.Class.getConstructor0(Class.java:2723)
    at java.lang.Class.newInstance0(Class.java:345)
    at java.lang.Class.newInstance(Class.java:327)
    at org.rythmengine.internal.compiler.TemplateClass.templateInstance_(TemplateClass.java:383)
    at org.rythmengine.internal.compiler.TemplateClass.asTemplate(TemplateClass.java:408)
    at org.rythmengine.internal.compiler.TemplateClass.asTemplate(TemplateClass.java:414)
    at org.rythmengine.play.RythmTemplate.internalRender(RythmTemplate.java:140)
    at play.templates.Template.render(Template.java:26)
    at play.mvc.results.RenderTemplate.<init>(RenderTemplate.java:24)
    at play.mvc.Controller.renderTemplate(Controller.java:662)
    at play.mvc.Controller.renderTemplate(Controller.java:642)
    at play.mvc.Controller.render(Controller.java:699)
    at controllers.Orders.print(Orders.java:130)
    at play.mvc.ActionInvoker.invokeWithContinuation(ActionInvoker.java:557)
    at play.mvc.ActionInvoker.invoke(ActionInvoker.java:508)
    at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:484)
    at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:479)
    at play.mvc.ActionInvoker.invoke(ActionInvoker.java:161)
    at Invocation.HTTP Request(Play!)
Caused by: javassist.NotFoundException: field: __parent in Orders_print_html__R_T_C__
    at javassist.CtClassType.getField(CtClassType.java:822)
    at javassist.expr.FieldAccess.getField(FieldAccess.java:113)
    at play.classloading.enhancers.PropertiesEnhancer$1.edit(PropertiesEnhancer.java:142)
    ... 35 more

But template renders fine, it just prints in console.
How can I find where is problem?

[PerfectCarl]

I have this issue too.