alright I found the fix for this the plugin is still a bit shaky for 1.3.9g especially with the css it doesnt match my template at all...

in the file override includes/index_filters/YOURTEMPLATE/default_filter.php

find lines 113-127 this sql query that is built in here calls for the m.manufacturers_name field but it never specifies the manufacturers tables in the join statements.

add this
PHP Code:
" LEFT JOIN " . TABLE_MANUFACTURERS . " m on p.manufacturers_id = m.manufacturers_id" . 
right below this
PHP Code:
  " LEFT JOIN " . TABLE_PRODUCTS_DESCRIPTION . " pd on p.products_id = pd.products_id" . 
and your all set .