Electromagik is tested upto Magento 1.4.0 but you can use this theme if you have upgraded your Magento version to 1.4.1. Just do the followings:
Go to app/design/frontend/default/electro_magik/layout/page.xml
change the line
<block type="core/profiler" output="toHtml"/>
with this
<block type="core/profiler" output="toHtml" name="core_profiler"/>
MagentoMagik

