Unexpected exception: compilation failed on new Play project

Question

I get this error for the just created Play 2.1.3 application. I am running Java 7u25. I created a new application and ran it using "play run" from the application directory.

Unexpected exception Compilation failed without reporting any problem!? No source available, here is the exception stack trace: ->sbt.compiler.CompileFailed: sbt.compiler.JavaCompiler$$anon$1.compile(JavaCompiler.scala:59) sbt.compiler.JavaTool$class.apply(JavaCompiler.scala:26) sbt.compiler.JavaCompiler$$anon$1.apply(JavaCompiler.scala:51) sbt.compiler.JavaCompiler$class.compile(JavaCompiler.scala:17) sbt.compiler.JavaCompiler$$anon$1.compile(JavaCompiler.scala:51) sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileJava$1$1$$anonfun$apply$mcV$sp$1$$anonfun$apply$mcV$sp$2.apply$mcV$sp(AggressiveCompile.scala:83) sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileJava$1$1$$anonfun$apply$mcV$sp$1$$anonfun$apply$mcV$sp$2.apply(AggressiveCompile.scala:83) sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileJava$1$1$$anonfun$apply$mcV$sp$1$$anonfun$apply$mcV$sp$2.apply(AggressiveCompile.scala:83) sbt.compiler.AggressiveCompile.sbt$compiler$AggressiveCompile$$timed(AggressiveCompile.scala:101) sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileJava$1$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(AggressiveCompile.scala:82) sbt.classfile.Analyze$.apply(Analyze.scala:85) sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileJava$1$1.apply$mcV$sp(AggressiveCompile.scala:81) sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileJava$1$1.apply(AggressiveCompile.scala:81) sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileJava$1$1.apply(AggressiveCompile.scala:81) sbt.compiler.AggressiveCompile.sbt$compiler$AggressiveCompile$$timed(AggressiveCompile.scala:101) sbt.compiler.AggressiveCompile$$anonfun$4.compileJava$1(AggressiveCompile.scala:80) sbt.compiler.AggressiveCompile$$anonfun$4.apply(AggressiveCompile.scala:88) sbt.compiler.AggressiveCompile$$anonfun$4.apply(AggressiveCompile.scala:60) sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:24) sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:22) sbt.inc.Incremental$.cycle(Incremental.scala:45) sbt.inc.Incremental$.compile(Incremental.scala:29) sbt.inc.IncrementalCompile$.apply(Compile.scala:20) sbt.compiler.AggressiveCompile.compile2(AggressiveCompile.scala:96) sbt.compiler.AggressiveCompile.compile1(AggressiveCompile.scala:44) sbt.compiler.AggressiveCompile.apply(AggressiveCompile.scala:31) sbt.Compiler$.apply(Compiler.scala:79) sbt.Defaults$$anonfun$compileTask$1.apply(Defaults.scala:572) sbt.Defaults$$anonfun$compileTask$1.apply(Defaults.scala:572) sbt.Scoped$$anonfun$hf2$1.apply(Structure.scala:578) sbt.Scoped$$anonfun$hf2$1.apply(Structure.scala:578) scala.Function1$$anonfun$compose$1.apply(Function1.scala:49) sbt.Scoped$Reduced$$anonfun$combine$1$$anonfun$apply$12.apply(Structure.scala:311) sbt.Scoped$Reduced$$anonfun$combine$1$$anonfun$apply$12.apply(Structure.scala:311) sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:41) sbt.std.Transform$$anon$5.work(System.scala:71) sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:232) sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:232) sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18) sbt.Execute.work(Execute.scala:238) sbt.Execute$$anonfun$submit$1.apply(Execute.scala:232) sbt.Execute$$anonfun$submit$1.apply(Execute.scala:232) sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:160) sbt.CompletionService$$anon$2.call(CompletionService.scala:30) java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) java.util.concurrent.FutureTask.run(Unknown Source) java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) java.util.concurrent.FutureTask.run(Unknown Source) java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) java.lang.Thread.run(Unknown Source) 

Answer 1

Is there a reason you cannot use JDK 1.8? Also, which version of SBT and which version of scala are you using? I had something similar to this, and I experienced several crashes (although usually with some error messages).

My solution was SBT version 0.13.15 or 1.0.3

You can specify the SBT assembly version in the /project/build.properties file

 sbt.version=0.13.15 

You can also try using scala version 2.11.8, I found it to be pretty solid! (You can install this in the build.sbt file)

 scalaVersion := 2.11.8