I need a forum so I downloaded the z_forum module by hand (as I have no hg installed) and put it in the zotonic/modules directory and then tried to rebuild Zotonic by calling 'make'. But I get this error on the z_forum module:
Recompile: modules/mod_zforum/mod_zforum
modules/mod_zforum/mod_zforum.erl:57: Warning: variable 'PostId' shadowed in 'fun'
Recompile: modules/mod_zforum/resources/resource_zforum
modules/mod_zforum/resources/resource_zforum.erl:22: can't find include lib "resource_html.hrl"
modules/mod_zforum/resources/resource_zforum.erl:24: Warning: function html/1 is unused
make: *** [erl] Error 1