I have the Accordion menu on a server (not Snow Leopard) where it worked fine until the PHP was upgraded to version 5.3. After that the menu just do not show. Turning on full error reporting on the site reveals these error messages for the module:
Warning: Parameter 1 to modMainMenuHelper2::buildXML()
expected to be a reference, value given in
/libraries/joomla/cache/handler/callback.php on line 99
Deprecated: Function ereg() is deprecated in
/modules/mod_s5_accordion_menu/mod_s5_accordion_menu.php on line 52
Deprecated: Function ereg() is deprecated in
/modules/mod_s5_accordion_menu/mod_s5_accordion_menu.php on line 56
So the problem is a PHP version incompatibility problem, as the module uses some deprecated functions. Any chance for getting that problem fixed?