I can't even get a blank test plugin to load

[clutchonline]

I created a folder in plugins called "test plugin", and created a file in that folder called plugininfo.txt, which contains the one line of code <plugin></plugin>. This will not load. When I go to load it, the "choose button" is greyed out.

I did this because the same thing was happening for the plugin for Clutch Baseball I'm working on. I can't choose the plugin in the load menu.

I checked and made sure the extension was correct.

What can I do? I can still choose any of the pre-made plugins, but not ones I make?

[clutchonline]

Edit: fixed it.
it requires a cardback.jpg.