Adobe 9.5.5 crashes on attempt to open encrypted pdf

Question

Quoting from online chat that was unsuccessful in resolving this(these) question(s)
Fred: The sender said
  Fred: The senter of the document says "After all voting selections have been made to the ballot, CLICK on the red “Click Here to Finalize Selections” button located on the Ballot Image at the top or bottom right hand corner. By clicking the red “Click Here to Finalize Selections” button on the ballot image, it will generate a PDF of all needed materials which include your FPCA Voter Instructions, Declared Write-In candidates, if applicable, Security Envelope, Carrier Envelope and your personal Ballot. Note: you WILL NOT be able to get back into the program if you have already clicked to finalize your selections button. After clicking “Click Here to Finalize Selections” button, the generated PDF will ask you to click Open or Save, please CLICK Save As and then specify the save location onto your computer. "
  Fred: is there an online service I can use to do that?
It should be noted that the system is 64 bit Linux (Mageia 3), and Arcobat 9.5.5 is the newest version available for that system.  Also, 9.5.5 seems to be able to handle "normal" pdf files without a problem, on this OS.
Thank you in advance for any help you may be able to offer
Regards
Fred James

Answer 1

OS: Mageia 3 64-bit, Adobe Acrobat Reader 9.5.5 (latest version available for this OS ... normally works for Adobe Acrobat PDF files (protable document files ... as in created by Adobe Acrobat)
I was sent an encrypted PDF file, which I was instructed to
     download and save
     open the downloaded file
     fill in the file (mouse clicks)
     and "finalize" the file (mouse click)
     and when the option was offered, save the resulting file
This is supposed to then generate some additional pages of information, also in PDF format.
Problem ... attempting to open this downloaded, encrypted PDF, crashes the Acrobat Reader (9.5.5).  To be specific
     open Acrobat Reader
     File -> Open
     select the file in question
     click open
     Acrobat Reader closes/vanishes from the screen.