Does anyone know how to get the scala version of Play framework to run

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Asked: May 24, 20262026-05-24T09:13:48+00:00 2026-05-24T09:13:48+00:00

Does anyone know how to get the scala version of Play framework to run

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Does anyone know how to get the scala version of Play framework to run in Google App Engine? At this point I’m only trying to get the default app to run. I’m using Play 1.2.2 with gae-1.4 and scala-0.9.1 modules.

I created a default app with:

play new appname --with scala

I updated application.conf with:

module.gae=${play.path}/modules/gae-1.4

I added my application id to war/WEB-INF/appengine-web.xml

Then I deployed deployed it to GAE:

play gae:deploy --gae=C:\AppEngine\appengine-java-sdk-1.5.2\

Anyways, the deployment seemed to work ok but when I try to run it, I get the following error:

play.Logger niceThrowable: Cannot load jar:file:/base/data/home/apps/appname/1.352166538901100396/WEB-INF/lib/play-scala.jar!/play.plugins
java.lang.NullPointerException
    at play.scalasupport.ScalaPlugin.<init>(ScalaPlugin.scala:166)
    at java.lang.Class.newInstance0(Class.java:372)
    at java.lang.Class.newInstance(Class.java:325)
    at play.plugins.PluginCollection.loadPlugins(PluginCollection.java:100)
    at play.Play.init(Play.java:286)
    ...

Anyone know what could cause this? I’m only trying to run the default web app at this point.