Play Framework 2.1 を使っていた時に次のようなエラーが出たことがあった。 $ play ~compile ... [error] [error] while compiling: myproject/target/scala-2.10/src_managed/main/views/html/signup.template.scala [error] during phase: jvm [error] library version: version 2.10.0 [error] compiler version: version 2.10.0 [error] reconstructed args: -encoding utf8 -bootclasspath ... [error] [error] last tree to typer: Literal(Constant(p