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https://issues.apache.org/struts/browse/SHALE-432?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Craig McClanahan resolved SHALE-432.
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    Resolution: Fixed

> Usability Improvement -- provide an appropriate error message when an app 
> includes shale-dialog but not one of the implementation jars
> --------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SHALE-432
>                 URL: https://issues.apache.org/struts/browse/SHALE-432
>             Project: Shale
>          Issue Type: Improvement
>          Components: Dialog
>    Affects Versions: 1.0.4, 1.1.0-SNAPSHOT
>            Reporter: Craig McClanahan
>             Fix For: 1.1.0-SNAPSHOT
>
>
> If the developer includes shale-dialog-xxx.jar but mistakenly omits one of 
> the implementation jars (such as shale-dialog-basic-xxx.jar or 
> shale-dialog-scxml-xxx.jar), the result is an obtuse NPE exception when the 
> DialogManager implementation cannot be located.  Also, similar 
> less-than-useful exception messages happen if configuration files are not 
> loaded, etc.

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