Apologies on the delayed response on this. I believe this issue was occurring due to Adobe replacing Adobe Acrobat XI (11.0.11) with a newer version, which is Adobe Acrobat XI (11.0.12). This is what typically occurs when you run into the "does not match the expected digest" message within the logs. This is due to the vendor utilizing a static URL for the specified file. I have included a link below to some additional documentation on this:
If you notice this issue occurring again, please let us know as we can typically provide a time frame of when the new update will be placed into our data.