EcmaError: ReferenceError: "arguments is not defined"

[OverZealous]

Upgrading from Less-Resources 1.0.1 to 1.3.0, I can no longer compile Less files. I simply get this error:

| Error 2012-05-06 16:48:33,640 [pool-17-thread-1] ERROR plugins.DefaultGrailsPluginManager  - Error configuring dynamic methods for plugin [resources:1.1.6]: Failed to initialize LESS compiler.
Message: Failed to initialize LESS compiler.
    Line | Method
->>  213 | init                          in org.lesscss.LessCompiler
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    229 | compile                       in     ''
|    302 | compile . . . . . . . . . . . in     ''
|    326 | compile                       in     ''
|    292 | compile . . . . . . . . . . . in     ''
|    279 | compile                       in     ''
|     31 | map . . . . . . . . . . . . . in LesscssResourceMapper$$ENWff6Qi
|    139 | invoke                        in org.grails.plugin.resource.mapper.ResourceMapper$$ENWff6Qi
|    128 | invokeIfNotExcluded . . . . . in     ''
|    587 | applyMappers                  in org.grails.plugin.resource.ResourceProcessor$$ENWff6Qi
|    533 | prepareResource . . . . . . . in     ''
|    602 | doCall                        in org.grails.plugin.resource.ResourceProcessor$_prepareSingleDeclaredResource_closure12$$ENWff6Qi
|     29 | addDeclaredResource . . . . . in org.grails.plugin.resource.util.ResourceMetaStore$$ENWff6Qi
|    600 | prepareSingleDeclaredResource in org.grails.plugin.resource.ResourceProcessor$$ENWff6Qi
|    625 | doCall . . . . . . . . . . .  in org.grails.plugin.resource.ResourceProcessor$_prepareResourceBatch_closure14$$ENWff6Qi
|      8 | each                          in org.grails.plugin.resource.ResourceProcessorBatch$$ENWff6Qi
|    621 | prepareResourceBatch . . . .  in org.grails.plugin.resource.ResourceProcessor$$ENWff6Qi
|    804 | resourcesChanged              in     ''
|    800 | loadModules . . . . . . . . . in     ''
|   1056 | reloadAll                     in     ''
|    172 | doCall . . . . . . . . . . .  in ResourcesGrailsPlugin$_closure3$$ENWff6wy
|    303 | innerRun                      in java.util.concurrent.FutureTask$Sync
|    138 | run . . . . . . . . . . . . . in java.util.concurrent.FutureTask
|    886 | runTask                       in java.util.concurrent.ThreadPoolExecutor$Worker
|    908 | run . . . . . . . . . . . . . in     ''
^    680 | run                           in java.lang.Thread

Caused by EcmaError: ReferenceError: "arguments" is not defined. (less.js#2447)
->> 3654 | constructError                in org.mozilla.javascript.ScriptRuntime
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   3632 | constructError                in     ''
|   3717 | notFoundError . . . . . . . . in     ''
|   1692 | name                          in     ''
|   3410 | interpretLoop . . . . . . . . in org.mozilla.javascript.Interpreter
|   2487 | interpret                     in     ''
|    164 | call . . . . . . . . . . . .  in org.mozilla.javascript.InterpretedFunction
|    398 | doTopCall                     in org.mozilla.javascript.ContextFactory
|   3065 | doTopCall . . . . . . . . . . in org.mozilla.javascript.ScriptRuntime
|    175 | exec                          in org.mozilla.javascript.InterpretedFunction
|   1135 | evaluateReader . . . . . . .  in org.mozilla.javascript.Context
|    204 | init                          in org.lesscss.LessCompiler
|    229 | compile . . . . . . . . . . . in     ''
|    302 | compile                       in     ''
|    326 | compile . . . . . . . . . . . in     ''
|    292 | compile                       in     ''
|    279 | compile . . . . . . . . . . . in     ''
|     31 | map                           in LesscssResourceMapper$$ENWff6Qi
|    139 | invoke . . . . . . . . . . .  in org.grails.plugin.resource.mapper.ResourceMapper$$ENWff6Qi
|    128 | invokeIfNotExcluded           in     ''
|    587 | applyMappers . . . . . . . .  in org.grails.plugin.resource.ResourceProcessor$$ENWff6Qi
|    533 | prepareResource               in     ''
|    602 | doCall . . . . . . . . . . .  in org.grails.plugin.resource.ResourceProcessor$_prepareSingleDeclaredResource_closure12$$ENWff6Qi
|     29 | addDeclaredResource           in org.grails.plugin.resource.util.ResourceMetaStore$$ENWff6Qi
|    600 | prepareSingleDeclaredResource in org.grails.plugin.resource.ResourceProcessor$$ENWff6Qi
|    625 | doCall                        in org.grails.plugin.resource.ResourceProcessor$_prepareResourceBatch_closure14$$ENWff6Qi
|      8 | each . . . . . . . . . . . .  in org.grails.plugin.resource.ResourceProcessorBatch$$ENWff6Qi
|    621 | prepareResourceBatch          in org.grails.plugin.resource.ResourceProcessor$$ENWff6Qi
|    804 | resourcesChanged . . . . . .  in     ''
|    800 | loadModules                   in     ''
|   1056 | reloadAll . . . . . . . . . . in     ''
|    172 | doCall                        in ResourcesGrailsPlugin$_closure3$$ENWff6wy
|    303 | innerRun . . . . . . . . . .  in java.util.concurrent.FutureTask$Sync
|    138 | run                           in java.util.concurrent.FutureTask
|    886 | runTask . . . . . . . . . . . in java.util.concurrent.ThreadPoolExecutor$Worker
|    908 | run                           in     ''
^    680 | run . . . . . . . . . . . . . in java.lang.Thread

Reverting back to 1.0.1 and everything works OK. Manually compiling all my less files also works without error.

OS: Mac OS X 10.6.8 Snow Leopard
Java: 1.6.0_31
Grails: 2.0.3

I'm not using YUI resources, and I don't have any other dependencies requesting Rhino, so I don't think that's it.

[OverZealous]

OK, nevermind, looks like I had downloaded a bad copy of org.lesscss.lesscss. I removed it from my ivy cache, and all's fine now. Now I just have errors with explicit bundling.