Problem to load hwdVideoShare

[diegojnf]

Hi, I was using the component hwdVideoShare at my jooml site, but when I try to publish It, appears the following message:
hwdVideoShare can not load until the following directory has been made writeable:
/home/cpca/public_html/cache/hwdvsdefault
Ensure all your Joomla Cache Directory Permissions are writeable before attempting to use hwdVideoShare

http://www.ufcg.edu.br/~cpca/index.php? ... &Itemid=91

When I change the directory permissions, mading it writable, the component doesn´t work, It appears just a white screen!

Does someone know what is happening or how I can change It?

Ps.: Sorry if my english is not very well, it´s because i´m brazilian.