Cryptograph Plugin and 404 errors??

Greetings – hoping someone can help…..finally got around to looking at my 404 errors and found that I have an enormous amount of 404 errors for the Cryptograph plugin, specifically:

[blogname]/wp-content/plugins/cryptograph/crypt/cryptographp.php

However, I’ve verified that this file does indeed exist at that location, so I’m not sure why it would be triggering a 404 error………

There is no information on the plugin homepage or the author’s page (it also is not in english). The plugin does seem to work fine (as far as I can tell?) and I do have comments using it……..I’m just wondering why the 404’s and if there is anything I can do to fix this (if it even needs to be fixed)….