Schedule+ Contacts text converter Error

[Randaddyz]

Everytime I open a word document on my computer (even one that I created) I
get a this window popping up:

This file needs to be opened by the Schedule+ Contacts text converter,
which may pose a security risk if the you are opening is a malicious file.
Choose Yes to open this file only if you are sure that it is from a trusted
source.

How do I turn this off?

Randaddy