Does Grails 2.1.0 Require Groovy 1.8?

Question

I recently updated a Grails app to 2.1.0, but when I war the project I get the following error:

java.lang.NoClassDefFoundError: org/codehaus/groovy/transform/powerassert/ValueRecorder

• Groovy Version 1.7.5
• Grails Version 2.1.0

Are these two versions compatible?

Answer 1

No. Grails 1.3.x uses Groovy 1.7, Grails 2.0.x and 2.1.x use Groovy 1.8, Grails 2.2 uses Groovy 2.0 and Grails 2.3 will use Groovy 2.1. You should probably do a grails dependency-report to see what is pulling in Groovy 1.7, and put the appropriate excludes in your BuildConfig dependency declarations.