Installing Elgg themes is a relatively easy task, but at times can be a bit confusing. One example would be the white-screen-of-death which has a way of sneaking up on us Elgg users. Here is a Quick rundown of the steps needed to install your new theme and some steps to help if the installation doesn’t go too smoothly.
elgg/mod/your_new_theme_folder
The reason for the final step is to force the theme to be loaded first instead of all of your other plugins. Definitely a good idea.
If your new theme or current theme ever leaves you with a white blank screen and you cant access your site simply:
If your looking for a new theme right now you may want to try out one of my two new themes: Custom Blue for Elgg 1.5 and Custom White for Elgg 1.5
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very good info,so i followed these things up to install elgg here in my server http://medicaltalk.net/
am excited
your post help me for using elgg theme for my website. thank you.