Sjur N. Moshagen commented on FOR-423:

An extremely old bug that just bit me. I found an e-mail exchange about this 
very issue here:


> Forrest crashes without an xdoc/index.xml file
> ----------------------------------------------
>                 Key: FOR-423
>                 URL: https://issues.apache.org/jira/browse/FOR-423
>             Project: Forrest
>          Issue Type: Bug
>          Components: Core operations
>    Affects Versions: 0.7
>         Environment: WinXP generating static site.
>            Reporter: Greg Jenci
>            Priority: Minor
> Forrest (Head, revision 125624) seems to assume there's an index.xml file in 
> the xdoc root directory.  Without this file, Forrest throws a nasty Java 
> exception shown below; however, the site seems to render correctly.  
> Additionally, in brokenlinks, there's this message that I cannot find a 
> reference for: "cocoon://index.html". 
> To reproduce this error, seed a fresh project, rename index.xml, and then 
> update site.xml & tab.xml and all other references to index.html accordingly.
> An easy workaround is to include a dummy index.xml file, which stops the 
> exception.  But, I'm not sure if there's some undiscovered side-effect.  For 
> additional information, please see User thread "Forrest crashes without an 
> xdoc/index.xml file"
> ----------------
> org.apache.cocoon.CascadingIOException: SourceException: 
> org.apache.excalibur.source.SourceException: Exception during processing of 
> cocoon://index.html: org.apache.excalibur.source.SourceException: Exception 
> during processing of cocoon://index.html
>         at 
> org.apache.cocoon.environment.commandline.AbstractCommandLineEnvironment.redirect(AbstractCommandLineEnvironment.java:124)
>         at 
> org.apache.cocoon.environment.ForwardRedirector.doRedirect(ForwardRedirector.java:158)
>         at 
> org.apache.cocoon.environment.ForwardRedirector.redirect(ForwardRedirector.java:64)

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