Multiple Groovy jars in my war file

I noticed that my Grails war has开发者_JS百科 two Groovy jars in it: groovy-1.7-rc-2.jar and groovy-all-1.7.4.jar -- What could be causing this? I took a look at my plugin dependencies, and BuildConfig but didn't find anything...

Try checking your classpath, and the libs included.