The UHC is a data-collection program, designed to work with an ASCII corpus, one word per line. It has been tested primarily on Turkic languages. Output is in the form of three text files, including data on harmony patterns, frequency statistics, and a list of disharmonic words.
You should save your corpus as text only, with a '.txt' or '.TXT' suffix.
For more information what this script does and how to use it, go to the Vowel Harmony Calculator homepage.