OpenRefine/OpenRefine — pull request #779 by sparkica (2013-08-10 10:41:58+00:00)
Title: Running Refine from Linux kit did not load extensions 

In main/webapp/WEB_INF/butterfly.properties extensions path is set to ../../extensions (no trailing slash).
After removing extra slash in replacefilter extensions, I re-built linux dist version and now Refine loads the extensions. Freebase is visible in the extensions bar.