That error is kind of a catch all that means there's a problem with the installation. Usually it means the database isn't set up right or your roller-custom.properties file isn't configured correctly.
The first place to check is the roller-startup.log (I believe that file is in the root of your webapps directory if you're running tomcat). Can you post what's in that log file?
/Brian
> Date: Sun, 21 Jun 2009 11:26:08 +0530
> Subject: Roller Installation
> From:
arvind.bernaulli@...
> To:
user@...;
snoopdave@...
>
> Hi
> I am trying to install roller(4.01) on ubuntu 9.04. As soon as I
> deploy roller I am getting this error
>
> Unexpected Exception Status Code 500 Message javax.servlet.ServletException:
> java.lang.IllegalStateException: Roller Weblogger has not been bootstrapped
> yet Type
> Exception Roller has encountered and logged an unexpected exception.
> can you tell me what may have caused this error?
>
> Thanks
> arvind
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