I'm trying to upload the Okapi package to a site I'm running with Omeka 1.2.1.
I know that Okapi is not optimized for the newest version of Omeka, but I wonder what I need to do in order to upload and use it properly.
Let me show you the problem. It transferred quite well to my website, but when I look for it under "Themes" I get this screenshot: http://twitpic.com/3gb0nc/full
I'm assuming that the Okapi theme is on the right, but there's no information for the theme. And when I click on the theme, the site blanks out and doesn't display anything.
Any help would be appreciated.
The Okapi theme was built for Omeka 0.9, so it is quite a few versions behind. Probably the biggest task would be to change the theme to use helpers and template files from our Theme API, many of which were added in 0.10. You could likely look at one of our newer themes and see which ones would need to be used. That said, the task of updating this theme is not a trivial amount of work, but it would, I think, be a fairly straight-forward task.
The specific problem you shared in your screenshot indicates that the Okapi theme does not have a theme.ini file or a theme.jpg file in the theme's directory. OMeka uses these files to display information about the theme in the admin panel. Here's an example theme.ini file from the Berlin theme. If you add something similar to the Okapi theme, you should see more information in your admin panel.
Hope this helps!