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Editorial Team
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Asked: 2026-05-18T10:09:26+00:00

I installed scala 2.8.0 last night and I seem to be having some issues

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I installed scala 2.8.0 last night and I seem to be having some issues getting it running. If I type scala at the command prompt it comes up with the following:

> scala
Exception in thread "main" java.lang.NoSuchMethodError: scala.collection.mutable.ListBuffer.toList()Lscala/collection/immutable/List;
        at scala.collection.TraversableOnce$class.toList(TraversableOnce.scala:399)
        at scala.collection.mutable.ArrayOps.toList(ArrayOps.scala:34)
        at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:33)
        at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)

Anyone have any ideas? I’m on Windows 7 professional, with Oracle JRE 1.6.0_21

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1 Answer

  1. Editorial Team

    Turns out this problem occurred because I put the sbt-launch.jar in the lib directory for my scala installation. Once I moved it into another directory scala worked fine.

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