zkspringws with spring webflow 2.2.1 and zk 5.0.7.1 does not perfectly work

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What steps will reproduce the problem?
1. Running zkspringwf in firefow
2. application is running well, except while clicking on 2 buttons
3. See post: 
http://www.zkoss.org/forum/listComment/16638-zkspringwf-zkspring-issues-Running-
Issues-and-Eclipse-Issues

What is the expected output? What do you see instead?
Expected Output: no errors.
Instead, I see error messages in a popup window

What version of the product are you using? On what operating system?
On June, 21st, trunk source code.

Please provide any additional information below.
it was a little bit painfull, but I successfully downloaded and ran the source 
code of zkspringwf (from the trunk) in my eclipse environment.
I have 1) Running Issues and 2) Eclipse issues.

My job:
I Checked out the source code from the trunk repository with svn
I created a new maven webapp project in Eclipse.
After few changes, I was able to compile and launch the project within Tomcat 
server (from Eclipse).
(XML errors pending).

1) Running Issues:
Tomcat internal server is running without errors.
I can use the application with Firefox.
But I have 2 issues during the main flow:

a) Change search does not work

Let search string with blank value
Click on Find Hotels button
Then click on change Search
a popup window appearing with the following message:
org.springframework.webflow.execution.FlowExecutionException: Exception thrown 
in state 'changeSearchCriteria' of flow 'main'

The console view displays these lines (it looks like a file is missing in the 
zkspring library).

>>org.zkoss.zk.ui.UiException: Page not found: 
~./zul/zkspring/webflow/popupTemplate.zul
>> at 
org.zkoss.zk.ui.http.ExecutionImpl.getPageDefinition(ExecutionImpl.java:372)
>> at 
org.zkoss.zk.ui.impl.AbstractExecution.createComponents(AbstractExecution.java:2
38)
>> at org.zkoss.spring.web.servlet.view.ZkView.renderPopup(ZkView.java:156)
>> at 
org.zkoss.spring.web.servlet.view.ZkView.renderMergedOutputModel(ZkView.java:86)
>> at 
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
>> at 
org.springframework.webflow.mvc.servlet.ServletMvcView.doRender(ServletMvcView.j
ava:50)
>> at 
org.springframework.webflow.mvc.view.AbstractMvcView.render(AbstractMvcView.java
:180)

after some search with google, I found two classes using this file:
ZkView and ViewState but I can't locate the expected file.

b) More results button does not work

Let search string with blank value
Click on Find Hotels button
then, click on More results

a popup window appears with the following message:
Unknown exception: java.lang.NullPointerException.

SEVERE: Failed to invoke class 
org.zkoss.spring.security.ui.ZkExceptionTranslationListener
java.lang.RuntimeException: java.lang.NullPointerException
at 
org.zkoss.spring.security.ui.ZkExceptionTranslationListener$1.doFilter(ZkExcepti
onTranslationListener.java:148)
at 
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(Exce
ptionTranslationFilter.java:97)
at 
org.zkoss.spring.security.ui.ZkExceptionTranslationListener.doExceptionTranslati
onFiltering(ZkExceptionTranslationListener.java:135)
at 
org.zkoss.spring.security.ui.ZkExceptionTranslationListener.cleanup(ZkExceptionT
ranslationListener.java:117)
at 
org.zkoss.zk.ui.util.Configuration.newEventThreadCleanups(Configuration.java:509
)

For this one, I don't know what happened. Any idea?

2) Eclipse Errors (But the war can be compiled an executed within Tomcat) with 
XML files.
I am using Spring STS / Maven (I think version is not important).

a)
cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can 
be found for element 'zksp:flow-builder-services'.

b)
cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can 
be found for element 'zksp:flow-controller'.

Original issue reported on code.google.com by [email protected] on 21 Jun 2011 at 11:45