I believe I have the latest version of WP because as of earlier today it did not say there was a new version available, but I don't know what the number is.
A few hours ago I installed W3 Total Cache on recommendation from another blogger. I am running WP in multi site mode.
After installing it from, the network admin console I went to the site admin and W3 Total Cache wasn't even listed. However, it was listed in the network admin.
Instead of coming here and asking for help right away I did a dumb and hit the "Network Activate" link. From then on the entire network, including the admin panel, had had a 500 error which also says "Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request."
As sugested below here is a link to my site: http://www.RealInvestingExperts.com that is the one I was really working on but the entire network is down (about 13 sites).
Now I don't even know how to undo it. I would prefer to actually use this plugin but at the least I need to remove it so that my sites will operate.
Please Help
Jacob Wagner