Problem with feedapi_inherit sub-module options

Hello
Thanks for the great module.
I have installed feedapi (including sub-modules FeedAPI Node, Common syndication parser, FeedAPI Inherit and FeedAPI Node Views) for a client with drupal 5.7, php 5.2.5, mysql 4.1.22 and apache 2.
One new content type was created, Feed.
The feed content type is working, and new nodes are created (as stories).
But unfortunately these couple of settings for taxonomy inheritance at the bottom (processors area) do NOT appear as they should and taxonomy terms cannot be passed to the nodes.
I have tried to uninstall the module and install it again without success.
How can this problem be resolved?
Thanks in advance