Imported Selenium IDE script fails

I am testing out Katalon Recorder and Studio to see if they can handle imported Selenium IDE scripts. I executed the following directions successfully:

How to import Selenium IDE test cases into Katalon Studio - Archive - Katalon Community

However, the moment I click RUN I receive the following error message:

01-24-2018 06:33:12 PM - [START]  - Start Test Case : Test Cases/New Test Case
01-24-2018 06:33:12 PM - [INFO]   - Evaluating variables for test case
01-24-2018 06:33:13 PM - [ERROR]  - Test Cases/New Test Case FAILED because (of)   org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
General error during class generation: Method code too large!
java.lang.RuntimeException: Method code too large!
  at groovyjarjarasm.asm.MethodWriter.a(Unknown Source)
  at groovyjarjarasm.asm.ClassWriter.toByteArray(Unknown Source)
  at org.codehaus.groovy.control.CompilationUnit$
  at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(
  at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(
  at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(
  at org.codehaus.groovy.control.CompilationUnit.compile(

I have no clue what this means. I appreciate any help.

I am getting the same error on imported selenium scripts…any help out there?


In addition to importing Selenium/TestNG/JUnit projects into Katalon Studio, from version 7.5.10 onwards, you can also import a Selenium IDE project for execution with Katalon Studio.

Download 7.5.10 here.


  • Katalon Studio version 7.5.10 onwards
  • An active Katalon Studio Enterprise license