[Play 2.2.2] Weird error on application launch : Invalid ConstantValue field attribute length 0 in class file scala/util/control/Exception$$anonfun$1

[Lauris Braka]

Hello everyone.

Several months ago I was working on an application with Play Framework 2.2.2 for my company.

My mission changed, and I was sent to a client, but now, my company needs me again on the project, since the previous developer went away.

Anyway, everything was working find when I gave the project to my successor, but now, I have a very strange error when I launch the application : 

Exception in thread "main" java.lang.ClassFormatError: Invalid ConstantValue field attribute length 0 in class file scala/util/control/Exception$$anonfun$1

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:800)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)

at java.net.URLClassLoader.access$100(URLClassLoader.java:71)

at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

at scala.util.control.Exception$.<init>(Exception.scala:147)

at scala.util.control.Exception$.<clinit>(Exception.scala)

at scalax.io.CloseableIterator$.withIterator(CloseableIterator.scala:101)

at scalax.io.traversable.ByteResourceTraversable.toArray(ByteResourceTraversable.scala:48)

at scalax.io.Input$class.byteArray(Input.scala:81)

at scalax.io.managed.InputStreamResource.byteArray(InputStreamResource.scala:14)

at scalax.io.Input$class.string(Input.scala:136)

at scalax.io.managed.InputStreamResource.string(InputStreamResource.scala:14)

at play.api.WithDefaultPlugins$$anonfun$pluginClasses$1.apply(Application.scala:98)

at play.api.WithDefaultPlugins$$anonfun$pluginClasses$1.apply(Application.scala:97)

at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)

at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)

at scala.collection.immutable.List.foreach(List.scala:309)

at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)

at scala.collection.AbstractTraversable.map(Traversable.scala:105)

at play.api.WithDefaultPlugins$class.pluginClasses(Application.scala:97)

at play.api.DefaultApplication.pluginClasses(Application.scala:399)

at play.api.WithDefaultPlugins$$anonfun$plugins$1.apply(Application.scala:128)

at play.api.WithDefaultPlugins$$anonfun$plugins$1.apply(Application.scala:164)

at play.utils.Threads$.withContextClassLoader(Threads.scala:18)

at play.api.WithDefaultPlugins$class.plugins(Application.scala:126)

at play.api.DefaultApplication.plugins$lzycompute(Application.scala:399)

at play.api.DefaultApplication.plugins(Application.scala:399)

at play.api.Play$$anonfun$start$1.apply$mcV$sp(Play.scala:88)

at play.api.Play$$anonfun$start$1.apply(Play.scala:88)

at play.api.Play$$anonfun$start$1.apply(Play.scala:88)

at play.utils.Threads$.withContextClassLoader(Threads.scala:18)

at play.api.Play$.start(Play.scala:87)

at play.core.StaticApplication.<init>(ApplicationProvider.scala:52)

at play.core.server.NettyServer$.createServer(NettyServer.scala:243)

at play.core.server.NettyServer$$anonfun$main$3.apply(NettyServer.scala:279)

at play.core.server.NettyServer$$anonfun$main$3.apply(NettyServer.scala:274)

at scala.Option.map(Option.scala:145)

at play.core.server.NettyServer$.main(NettyServer.scala:274)

at play.core.server.NettyServer.main(NettyServer.scala)

I have absolutely no idea where the problem can possibly come from. 

I can provide you with some code of the application, but does anyone here have any idea on where to start looking ?

That would help a lot !

Thank you

Lauris