Grails calendar plugin

I have a groovy application which uses the grails calendar plugin grails calendar plugin. Up to now I was using the calendar version 1.1.1 which has some bugs under IE. I've upgraded to version 1.2.0-SNAPSHOT3 but now I am getting this exception, therefore I had to downgrade to my previous version.

Any hint how to workaround this problem?

Thanks in advance, Luis

Error500:Error processing GroovyPageView: Error executing tag <g:form>: org.codehaus.groovy.grails.web.taglib.exceptions.GrailsTagException: Error executing tag <calendar:datePicker>: groovy.lang.MissingMethodException: No signature of me开发者_如何学Pythonthod: java.util.GregorianCalendar.setTime() is applicable for argument types: (java.lang.String) values: [Thu Oct 08 11:38:42 CEST 2009]
Servlet: grails
URI: /smtool/grails/billingAccounting/show.dispatch
Exception Message: No signature of method: java.util.GregorianCalendar.setTime() is    applicable for argument types: (java.lang.String) values: [Thu Oct 08 11:38:42 CEST 2009]
Caused by: Error processing GroovyPageView: Error executing tag <g:form>: org.codehaus.groovy.grails.web.taglib.exceptions.GrailsTagException: Error executing tag <calendar:datePicker>: groovy.lang.MissingMethodException: No signature of method: java.util.GregorianCalendar.setTime() is applicable for argument types: (java.lang.String) values: [Thu Oct 08 11:38:42 CEST 2009]
Class: GrailsAuthenticationProcessingFilter 

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Hard to say, but it seems that the program passed a wrong-type value into java.util.GregorianCalendar.setTime() function. You should try to find where the function is called in the source code. It will provide more information.