title: preText - Error in validityMethod(as(object, superClass)) : object 'packedMatrix_validate' not found
body: <p>So I am trying to figure out the preText package in R and following the tutorial from <a href="https://www.mjdenny.com/getting_started_with_preText.html" rel="nofollow noreferrer">https://www.mjdenny.com/getting_started_with_preText.html</a></p>
  <pre><code>library(preText)
  
  library(quanteda)
  
  ###### load in U.S. presidential inaugural speeches from Quanteda example data.
  corp &lt;- data_corpus_inaugural
  
  documents &lt;- corp[1:10,]
  
  preprocessed_documents &lt;- factorial_preprocessing(
    documents,
    use_ngrams = TRUE,
    infrequent_term_threshold = 0.2,
    verbose = FALSE)
  </code></pre>
  <p>The code works fine till this stage but after that it doesn't</p>
  <pre><code>preText_results &lt;- preText(
    preprocessed_documents,
    dataset_name = &quot;Inaugural Speeches&quot;,
    distance_method = &quot;cosine&quot;,
    num_comparisons = 20,
    verbose = FALSE)
  </code></pre>
  <p>Error that I am getting</p>
  <pre><code>Error in validityMethod(as(object, superClass)) : object 'packedMatrix_validate' not found
  </code></pre>
  <p>Can someone tell me how to fix this?</p>