Recorder won't start

I am trying to launch the recorder for Gatling 1.2.3 on Kubuntu Oneiric 64bits with Oracle Jav 1.6.0_33 and I get an Exception:

Exception in thread “main” java.lang.InstantiationError: scala.Option
at sun.reflect.GeneratedSerializationConstructorAccessor3.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(
at com.thoughtworks.xstream.converters.reflection.Sun14ReflectionProvider.newInstance(

I don’t understand since the scala libs are in the classpath.
I reproduce this problem with the 1.2.1 version. I don’t remember having encountered it with Gatling1.2.0

Hi Emmanuel,

Try to delete the file named gatling-recorder.ini in your home directory.

It should solve the problem.

Indeed, the recorder has been completely rewritten, making the configuration file obsolete :slight_smile:

Hope this helps !


My fault, I forgot to mention this in the changelog and the migration guide.
Fixing this ASAP.

2012/6/19 Romain Sertelon <>


2012/6/19 Stéphane Landelle <>

Fixed my probelm :).