Dear Magnolians

I have a mostly standard Magnolia 4.5.12 project based on 
magnolia-bundled-webapp. But for some strange reason I'm not able to activate 
any nodes. I would appreciate if someone could help me figure out the cause 
behind these symptoms: 

- I'm activating a  standard website node
- I have not changed anything in the command configuration nor in the subscriber
- However I'm getting a JS-Message "Can't activate: : " (that's it, nothing 
more)

In the log, I'm finding two exceptions:

[code]2014-05-22 07:28:45,369 ERROR 
a.module.admininterface.commands.ActivationCommand: can't activate
java.lang.NullPointerException
        at 
info.magnolia.module.admininterface.commands.ActivationCommand.activateUpdate(ActivationCommand.java:123)
        at 
info.magnolia.module.admininterface.commands.ActivationCommand.execute(ActivationCommand.java:94)
        at 
info.magnolia.commands.MgnlCommand.executePooledOrSynchronized(MgnlCommand.java:188)
        at info.magnolia.commands.MgnlCommand.execute(MgnlCommand.java:161)
        at info.magnolia.commands.MgnlCommand.execute(MgnlCommand.java:154)
        at 
info.magnolia.commands.DelegateCommand.execute(DelegateCommand.java:62)
...

2014-05-22 07:28:45,371 ERROR 
agnolia.cms.servlets.CommandBasedMVCServletHandler: can't execute command
java.lang.IllegalArgumentException: Cannot invoke 
info.magnolia.module.admininterface.commands.ActivationCommand.setVersionMap on 
bean class 'class 
info.magnolia.module.admininterface.commands.ActivationCommand' - argument type 
mismatch - had objects of type "java.lang.String" but expected signature 
"java.util.List"
        at 
org.apache.commons.beanutils.PropertyUtilsBean.invokeMethod(PropertyUtilsBean.java:2181)
        at 
org.apache.commons.beanutils.PropertyUtilsBean.setSimpleProperty(PropertyUtilsBean.java:2141)
        at 
org.apache.commons.beanutils.PropertyUtilsBean.setNestedProperty(PropertyUtilsBean.java:1948)
        at 
org.apache.commons.beanutils.PropertyUtilsBean.setProperty(PropertyUtilsBean.java:2054)
...[/code]

When debugging I see that 
- syndicator in BaseActivationCommand is null
- isClone is set to false so no syndicator will ever be created by 
getSyndicator()

Does anyone have an idea what could be causing this?

Thanks!
-will

-- 
Context is everything: 
http://forum.magnolia-cms.com/forum/thread.html?threadId=6d78c94c-de61-44ac-93ad-50c05d73572e


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