I tried earlier to day to activate the Who’s Online plugin. But, when I clicked activate I got a “page not found” error from WordPress (ver 3.3.1) I’m running the pre-release ver of simple-press and the plugin from the pre-release page.
I found that if I edited the url in the “page not found” location bar, to take out the apostrophe, and hit reload, then the plugin was properly activated.
The only reason I went back to try this again is because I just tried to activate a plugin from the WordPress repository called: Peter’s Login Redirect. Had the same problem with trying to activate that plugin. Noticed the apostrophe and put 2 and 2 together.
So, I don’t know if this is WP 3.3.1 issue, or just a plugin issue, or just bad practice to have an apostrophe in the plugin name…
Make what you will of it, but I would avoid using apostrophes 🙂