Summary:
mismatch in code CGSimpleSmarty.module.php
Detailed Description:
line 122
function plugin_setvar($params,&$samrty)
&$smarty, not samrty
Also, for the use of setvar, unsetvar and getvar, the cge_tmpdata class is
needed which is a CGExtension class.
But CGSimpleSmarty have no dependency.