Errors installing JopenSim 2.6.4 on Joomla 3.0

Hi

I have done a clean install on a Ubuntu 12.042 LAMP webserver with Joomla 3.0 using JopenSim 2.6.4.
I get internal server 500 when I try to access JopenSim from the administrator/components/JopenSim.

Here is the error I get from my webserver log:
[Tue Mar 26 18:17:11 2013] [error] [client 192.168.16.2] PHP Notice: Use of undefined constant DS - assumed 'DS' in /var/www/administrator/components/com_opensim/opensim.php on line 24, referer: virtualrealmsgrid.com/administrator/inde...staller&view=install

I looked at my mysql database and jopensim did not install the proper database entries either..

What do I have misconfigured?

Thanks,
Todd

There have been major changes to joomla 3 , I don't thing JopenSim is currently supported on Joomla 3 ..

works fine on 2.5 though ...

Works on Joomla 2.5!

Thanks watcher64!