Multiple Issues on Adobe [Acrobat] Pro (Federal Account)

Hello, I recently downloaded Adobe Pro (64-bit) through my position, which is federal. This requires several "hoops" to jump through to download and install the application.

After finally getting approval and getting Pro downloaded and installed, I am running into a couple issues.

The first of which is Error 105: "The document could not be saved. There was a problem reading this document."

The second of which is "the document could not be signed." I checked the document Properties and Security and signing is allowed. 

Both of these issues are preventing me from being able to do my job effectively and in a timely manner, so any assistance in fixing these issues would be greatly appreciated!

[Acrobat added to subject by moderator. Adobe is a company that makes many applications. This application is Acrobat Pro.]