DownloadAssistant quit unexpectedly.

Recently purchased a download card for Adobe Photoshop Elements 15... keep getting DownloadAssistant quit unexpectedly when trying to open downloaded file. Help!

Process:               DownloadAssistant [4866]

Path:                  /Users/USER/Downloads/Download_Adobe_Photoshop_Elements_15_(Mac)-3.app/Contents/MacOS/DownloadAssistant

Identifier:            com.arvato.DownloadAssistant

Version:               1.5.1.500

Code Type:             X86 (Native)

Parent Process:        ??? [1]

Responsible:           DownloadAssistant [4866]

User ID:               501

Date/Time:             2016-11-30 10:44:44.854 +1030

OS Version:            Mac OS X 10.11.6 (15G31)

Report Version:        11

Anonymous UUID:        6C186E82-B7A5-C21A-2F96-716A7D39F1B2

[When a Staff person asks for private information hover your mouse over their name]

[you may then click the Message option in the popup window to send a private email]

[long crash log removed... please only send a crash log to a technician, when asked]