Installed the plugin and the gallery is not displaying:
savannahneighborhoods.org/index.php?option=com_content&view=section&layout=blog&id=10&Itemid=54

Initially I was getting a "file not found error" pointing me to this line in plugin_jw_sigpro.php:

// INCLUDE_ONCE FILE FOR CREATING THUMBS
include_once($mosConfig_absolute_path."/mambots/content/plugin_jw_sigpro/sigpro_engine.php");

There isn't a mambots folder in my set-up, the file was in a folder called plugins. So I changed the path to:

// INCLUDE_ONCE FILE FOR CREATING THUMBS
include_once($mosConfig_absolute_path."/plugins/content/plugin_jw_sigpro/sigpro_engine.php");

The error disappeared but gallery still not displaying.

I am having the same problem - I changed 'mambots' to 'plugins' in the directory path and now I don't have an error message; now in my content/article there is no gallery, just the '{gallery}path{/gallery}' text

i installed the wrong zip. brilliant! appears to be working now.  :-[