Can't register Acrobat Pro 2017 - Error message

Hi Ericha,

Adding on to the suggestion by kglad

What is the dot version of the application installed? To check the version of the application please refer to the link - Identify the product and its version for Acrobat and Reader DC​

Please try to update the application to the latest version. Go to Help > Check For Updates. To know more about the latest version available please refer to  - DC Release Notes — Release Notes for Acrobat DC Products

You may also follow the troubleshooting steps provided in the link - Troubleshoot Mac OS 10.x system errors, freezes | Adobe software

Let us know if that works for you

Regards

Amal

restart your computer and retry opening.

if that causes another acrobat crash, reset your preferences -  https://forums.adobe.com/thread/1595848?start=0&tstart=0