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http://jira.magnolia-cms.com/browse/MAGNOLIA-2711?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=22764#action_22764
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Grégory Joseph edited comment on MAGNOLIA-2711 at 5/25/09 5:56 PM:
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The attach stacktrace emanates from {{WriterAppender}} - which indicates this 
could be thrown before our actual "custom" log4j configuration - we first let 
log4j be configured from {{core:/log4j.xml}}, which uses {{ConsoleAppender}} 
(which is a {{WriterAppender}} subclass, unlike {{AsyncAppender}})

Furthermore, line 140 of {{java.io.Writer}} my jdk6 source would indicate the 
NPE would be caused when attempting to write a {{null}} String; this would 
surprising, I'd assume log4j takes care of that. My jdk5 copy doesn't have any 
relevant source for NPEs at {{java.io.Writer:140}}.

      was (Author: gjoseph):
    The attach stacktrace emanates from {{WriterAppender}} - which indicates 
this could be thrown before our actual "custom" log4j configuration - we first 
let log4j be configured from {{core:/log4j.xml}}, which uses 
{{ConsoleAppender}} (which is a {{WriterAppender}} subclass, unlike 
{{AsyncAppender}})
  
> Failure to resolve class when finishing installation leads to 404 page being 
> displayed after installation
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: MAGNOLIA-2711
>                 URL: http://jira.magnolia-cms.com/browse/MAGNOLIA-2711
>             Project: Magnolia
>          Issue Type: Bug
>    Affects Versions: 4.0.1
>            Reporter: Jan Haderka
>            Assignee: Boris Kraft
>         Attachments: stacktrace.txt
>
>
> Stacktrace attached. Hitting the back button and clicking on "Start Magnolia" 
> button again leads to admin interface being displayed (on author) as 
> expected. The exception in UI appears most likely because initialization is 
> not finished yet. We should either postpone those or make sure some better 
> page is displayed then default tomcat's 404.

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