Error using pyenchant: enchant_dict_check: assertion `g_utf8_validate(word, len, NULL)' failed

I'm trying to check a list of tags against the english dictionary. I'm using pyenchant and I keep getting error. It seems to have an error after it reads a "?". I attempted to take out all punctuation by using the string library and the following code: ``` for punc in string.punctuation: title = title.replace(punc,'') ``` but some how this char which appears to look like a ? is throwing off the dictionary. Code snippet: ``` if word not in stopwords.words('english'): print word, "=", d.check(word) if d.check(word): tags.append(word.lower()) ``` Response: ``` Learning = True Lens = True Children = True Pumkincom = False Pumkin = False ** (process:49042): CRITICAL **: enchant_dict_check: assertion `g_utf8_validate(word, len, NULL)' failed ? = ``` I'm using Python 2.7.3 and pyenchant-1.6.5-py2.7 EDIT: I think I solved this problem by checking to see if len(word)==1 but I would like to know why this happens.