I have an issue with an exception that occurs when I log in with an LDAP account,
the adminInterface works fine , but the site gives an exception:

2009-11-20 11:00:31,969 ERROR freemarker.runtime :
Method public java.lang.String info.magnolia.cms.security.ExternalUser.getProperty(java.lang.String) threw an exception when invoked on info.magnolia.cms.security.ExternalUser@11fde0
The problematic instruction:
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==> assignment: userFullName=ctx.user.getProperty("title")!userName [on line 4, column 1 in templating-kit/paragraphs/pur/link.ftl]
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Java backtrace for programmers:
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freemarker.template.TemplateModelException: Method public java.lang.String info.magnolia.cms.security.ExternalUser.getProperty(java.lang.String) threw an exception when invoked on info.magnolia.cms.security.ExternalUser@11fde0
at freemarker.ext.beans.SimpleMethodModel.exec(SimpleMethodModel.java:130)
at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93)
at freemarker.core.Expression.getAsTemplateModel(Expression.java:89)
at freemarker.core.DefaultToExpression._getAsTemplateModel(DefaultToExpression.java:100)

Caused by: java.lang.UnsupportedOperationException: not implemented for this ExternalUser
at info.magnolia.cms.security.ExternalUser.getProperty(ExternalUser.java:155)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

It seems that the / templating-kit/paragraphs/pur/link.ftl tries to get the fullname from an external user:

assign userFullName = ctx.user.getProperty("title")!userName

But ExternalUser has this as
its getProperty:

public String getProperty(String propertyName)

I am currently runing Magnolia Enterprise Edition 4.1RC1 and
Templating Kit Standard 1.2RC2 , Extended 1.2RC1