I tried to get it running on a well configured Apache with PHP 5.5, as component under Joomla 3.2.2 and as standalone client, no success, always get a blank page when accessing it.
Are there any specific PHP parameter or other configuration to be set?
I tried it on 2 different servers, same result.
sorry for the late answer...
eXtplorer runs well under PHP 5.5. There are no special options to be set.
Any errors in your PHP log?