The MiniMU plugin blows my site up! Please help!

I’m trying to activate MiniMU – info below:

Manage multiple blogs with a single standard WordPress installation. Each may have its own theme and domain while sharing users and administration. Configure options

Version 0.6.0 | By Eric Shelkie | Visit plugin site

But, when I try, I get the following error:

500 Internal Server Error

The request was not completed. The server met an unexpected condition.

50.116.99.98/~cressman/wp-admin/plugins.php?action=activate&plugin=minimu%2Fminimu.class.php&plugin_status=all&paged=1&s&_wpnonce=33c4d6cd47 (port 80)

Please forward this error screen to 50.116.99.98’s WebMaster.

——————————————————————————–

Apache mod_qos/9.69 mod_fcgid/2.3.6 FrontPage/5.0.2.2635 mod_bwlimited/1.4 mod_auth_passthrough/2.1 Server at 50.116.99.98 Port 80

And then it blows up my site. I have to goto into ftp and delete the MiniMu directory for my site to work again or to be able to get into the admin dashboard.

Any clues? Please…. I really need to get multiple domains working with this site.

Thanks!