ecshop安装模板不可写如何解决

ecshop安装模板不可写怎么解决？
我的系统是mac osx 10.8.2
ecshop2.7.3
急求解决办法！！！谢谢了
报错：
themes/default/activity.dwt 不可写
themes/default/article.dwt 不可写
themes/default/article_cat.dwt 不可写
themes/default/article_pro.dwt 不可写
themes/default/auction.dwt 不可写
themes/default/auction_list.dwt 不可写
themes/default/brand.dwt 不可写
themes/default/brand_list.dwt 不可写
themes/default/catalog.dwt 不可写
themes/default/category.dwt 不可写
themes/default/compare.dwt 不可写
themes/default/exchange_goods.dwt 不可写
themes/default/exchange_list.dwt 不可写
themes/default/flow.dwt 不可写
themes/default/gallery.dwt 不可写
themes/default/goods.dwt 不可写
themes/default/group_buy_goods.dwt 不可写
themes/default/group_buy_list.dwt 不可写
themes/default/index.dwt 不可写
themes/default/message.dwt 不可写
themes/default/message_board.dwt 不可写
themes/default/myship.dwt 不可写
themes/default/package.dwt 不可写
themes/default/pick_out.dwt 不可写
themes/default/quotation.dwt 不可写
themes/default/receive.dwt 不可写
themes/default/respond.dwt 不可写
themes/default/search.dwt 不可写
themes/default/snatch.dwt 不可写
themes/default/tag_cloud.dwt 不可写
themes/default/topic.dwt 不可写
themes/default/user_clips.dwt 不可写
themes/default/user_passport.dwt 不可写
themes/default/user_transaction.dwt 不可写
themes/default/wholesale_list.dwt 不可写
themes/default/library/ad_position.lbi 不可写
themes/default/library/article_category_tree.lbi 不可写
themes/default/library/auction.lbi 不可写
themes/default/library/bought_goods.lbi 不可写
themes/default/library/bought_note_guide.lbi 不可写
themes/default/library/bought_notes.lbi 不可写
themes/default/library/brand_goods.lbi 不可写
themes/default/library/brands.lbi 不可写
themes/default/library/cart.lbi 不可写
themes/default/library/cat_articles.lbi 不可写
themes/default/library/cat_goods.lbi 不可写
themes/default/library/category_tree.lbi 不可写
themes/default/library/categorys.lbi 不可写
themes/default/library/comments.lbi 不可写
themes/default/library/comments_list.lbi 不可写
themes/default/library/consignee.lbi 不可写
themes/default/library/email_list.lbi 不可写
themes/default/library/exchange_hot.lbi 不可写
themes/default/library/exchange_list.lbi 不可写
themes/default/library/filter_attr.lbi 不可写
themes/default/library/goods_article.lbi 不可写
themes/default/library/goods_attrlinked.lbi 不可写
themes/default/library/goods_fittings.lbi 不可写
themes/default/library/goods_gallery.lbi 不可写
themes/default/library/goods_list.lbi 不可写
themes/default/library/goods_related.lbi 不可写
themes/default/library/goods_tags.lbi 不可写
themes/default/library/group_buy.lbi 不可写
themes/default/library/help.lbi 不可写
themes/default/library/history.lbi 不可写
themes/default/library/index_ad.lbi 不可写
themes/default/library/invoice_query.lbi 不可写
themes/default/library/member.lbi 不可写
themes/default/library/member_info.lbi 不可写
themes/default/library/message_list.lbi 不可写
themes/default/library/myship.lbi 不可写
themes/default/library/new_articles.lbi 不可写
themes/default/library/online.lbi 不可写
themes/default/library/order_query.lbi 不可写
themes/default/library/order_total.lbi 不可写
themes/default/library/page_footer.lbi 不可写
themes/default/library/page_header.lbi 不可写
themes/default/library/pages.lbi 不可写
themes/default/library/price_grade.lbi 不可写
themes/default/library/promotion_info.lbi 不可写
themes/default/library/recommend_best.lbi 不可写