Grails downgrade to 1.3.7 from 1.4.0 and broke jQuery plugin

I'm not sure why this happened, but when I downgrade grails from 1.4.0 to 1.3.7 it causes this to my jquery plugin when I grails run-app

ERROR context.GrailsContext开发者_开发技巧Loader  - Error executing bootstraps: java.lang.NoClassDefFoundError: org.codehaus.groovy.grails.plugins.jquery.JQueryConfig
org.codehaus.groovy.runtime.InvokerInvocationException: java.lang.NoClassDefFoundError: org.codehaus.groovy.grails.plugins.jquery.JQueryConfig
    at grails.spring.BeanBuilder.invokeBeanDefiningClosure(BeanBuilder.java:723)
    at grails.spring.BeanBuilder.beans(BeanBuilder.java:573)
    at grails.spring.BeanBuilder.invokeMethod(BeanBuilder.java:519)
    at org.grails.tomcat.TomcatServer.start(TomcatServer.groovy:212)
    at grails.web.container.EmbeddableServer$start.call(Unknown Source)
    at _GrailsRun_groovy$_run_closure5_closure12.doCall(_GrailsRun_groovy:158)
    at _GrailsRun_groovy$_run_closure5_closure12.doCall(_GrailsRun_groovy)
    at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:280)
    at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy)
    at _GrailsRun_groovy$_run_closure5.doCall(_GrailsRun_groovy:149)
    at _GrailsRun_groovy$_run_closure5.call(_GrailsRun_groovy)
    at _GrailsRun_groovy.runInline(_GrailsRun_groovy:116)
    at _GrailsRun_groovy.this$4$runInline(_GrailsRun_groovy)
    at _GrailsRun_groovy$_run_closure1.doCall(_GrailsRun_groovy:59)
    at RunApp$_run_closure1.doCall(RunApp.groovy:33)
    at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381)
    at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415)
    at gant.Gant$_dispatch_closure7.doCall(Gant.groovy)
    at gant.Gant.withBuildListeners(Gant.groovy:427)
    at gant.Gant.this$2$withBuildListeners(Gant.groovy)
    at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
    at gant.Gant.dispatch(Gant.groovy:415)
    at gant.Gant.this$2$dispatch(Gant.groovy)
    at gant.Gant.invokeMethod(Gant.groovy)
    at gant.Gant.executeTargets(Gant.groovy:590)
    at gant.Gant.executeTargets(Gant.groovy:589)
Caused by: java.lang.NoClassDefFoundError: org.codehaus.groovy.grails.plugins.jquery.JQueryConfig
    at JqueryGrailsPlugin$_closure1.class$(JqueryGrailsPlugin.groovy)
    at JqueryGrailsPlugin$_closure1.$get$$class$org$codehaus$groovy$grails$plugins$jquery$JQueryConfig(JqueryGrailsPlugin.groovy)
    at JqueryGrailsPlugin$_closure1.doCall(JqueryGrailsPlugin.groovy:53)
    at JqueryGrailsPlugin$_closure1.doCall(JqueryGrailsPlugin.groovy)

I have to grails clean every time before I can grails run-app please help.

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Have you tried deleting your jquery plugin from ~/.grails/yourproject/plugins and forcing a reinstall?

Also, check application.properties to see if the version did not downgrade properly, I've heard rumours of plugins not downgrading properly when you downgrade grails version (has to do with dependency chains or something like that iirc). If your jquery plugin is tagged with M1 that is probably it.

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Have you checked the changes done in the conf/jquery config file ?

http://www.grails.org/plugin/jquery

I suspect your configuration is specifically requiring some code that is not available anymore.

Search for: JQueryConfig in your configuration folder.