FYI I am running PHP 5.4.6. I installed shs for the first time and got an error message when creating content:
Strict warning: Only variables should be passed by reference in shs_field_widget_form() (line 268 of ...
I searched for issues with the same problem and found http://drupal.org/node/1910974. I then uninstalled shs 7.x-1.5 and installed the dev version shs 7.x-1.5+8-dev (2013-Feb-25). The strict warning disappeared and shs appeared to work normally.
So thanks for a great module and the latest dev version works with PHP 5.4.6.