Swing-XML Authoring Tool

After downloading and unzipping the swixat-0.5.5.tar.tar
running the example from the cmd results with the following:
Any ideas?

C:\tmp\swixat\swixat-0.5.5>java -jar swixat-0.5.5.jar
org/swixat/samples/calculator/xml/context.xml
[INFO,XmlBeanDefinitionReader] Loading XML bean definitions from class path
resource [org/swixat/samples/calculator/xml/context.xml]
[INFO,CollectionFactory] Commons Collections 3.x available
SwixML 1.5 (#144)
[WARN,AbstractFrame] Error during init of: xml/calculatorSDI.xml
org.springframework.beans.factory.BeanCreationException: Error creating
bean with name 'newTags' defined in class path resource
[org/swixat/samples/calculator/xml/context.xml]: Error setting property
values; nested e
tion is org.springframework.beans.PropertyAccessExceptionsException:
PropertyAccessExceptionsException (1 errors); nested
propertyAccessExceptions are:
[org.springframework.beans.TypeMismatchException: Failed to conv
property value of type [org.apache.commons.collections.map.LinkedMap] to
required type [java.util.HashMap] for property 'newTags']
PropertyAccessExceptionsException (1 errors)
org.springframework.beans.TypeMismatchException: Failed to convert property
value of type [org.apache.commons.collections.map.LinkedMap] to required
type [java.util.HashMap] for property 'newTags'
at
org.springframework.beans.BeanWrapperImpl.doTypeConversionIfNecessary(BeanW
rapperImpl.java:1103)
at
org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.
java:848)
at
org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.
java:733)
at
org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.
java:890)
at
org.springframework.beans.BeanWrapperImpl.setPropertyValues(BeanWrapperImpl
.java:917)
at
org.springframework.beans.BeanWrapperImpl.setPropertyValues(BeanWrapperImpl
.java:906)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactor
y.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1026)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactor
y.populateBean(AbstractAutowireCapableBeanFactory.java:823)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactor
y.createBean(AbstractAutowireCapableBeanFactory.java:345)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(Abstr
actBeanFactory.java:226)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(Abstr
actBeanFactory.java:147)
at
org.swixat.framework.SwiXMLEngine.extendTagLibrary(SwiXMLEngine.java:722)
at org.swixat.framework.SwiXMLEngine.init(SwiXMLEngine.java:710)
at org.swixat.framework.SwiXMLEngine.<init>(SwiXMLEngine.java:81)
at
org.swixat.framework.AbstractFrame.initFrame(AbstractFrame.java:381)
at
org.swixat.framework.IndependentFrame.init(IndependentFrame.java:40)
at
org.swixat.framework.IndependentFrame.init(IndependentFrame.java:31)
at org.swixat.SwiXAT.launchApp(SwiXAT.java:183)
at org.swixat.SwiXAT.launch(SwiXAT.java:73)
at org.swixat.SwiXAT.launch(SwiXAT.java:55)
at org.swixat.SwiXATLauncher.main(SwiXATLauncher.java:34)
Exception in thread "main" java.lang.NullPointerException
at
org.swixat.framework.AbstractFrame.frameOpened(AbstractFrame.java:251)
at
org.swixat.framework.IndependentFrame.init(IndependentFrame.java:41)
at
org.swixat.framework.IndependentFrame.init(IndependentFrame.java:31)
at org.swixat.SwiXAT.launchApp(SwiXAT.java:183)
at org.swixat.SwiXAT.launch(SwiXAT.java:73)
at org.swixat.SwiXAT.launch(SwiXAT.java:55)
at org.swixat.SwiXATLauncher.main(SwiXATLauncher.java:34)

C:\tmp\swixat\swixat-0.5.5>