Error message

• Warning: mkdir(): Permission denied in boost_mkdir() (line 1407 of sites/all/modules/boost/boost.module).
• Notice: Undefined offset: 1 in theme_print_url_list() (line 357 of sites/all/modules/print/print.pages.inc).
• Notice: Undefined offset: 1 in theme_print_url_list() (line 357 of sites/all/modules/print/print.pages.inc).
• Notice: Undefined offset: 1 in theme_print_url_list() (line 357 of sites/all/modules/print/print.pages.inc).
• Notice: Undefined offset: 1 in theme_print_url_list() (line 357 of sites/all/modules/print/print.pages.inc).