Acrobat Pro DC shuts down
Acrobat Pro DC shuts down if you try to have two documents open at the same time and also when you try to open a document that it is in a previous version of Adobe. This just started happening last week. My software is up to date.
I am sorry for the inconvenience you are facing.
Can you share with us the acrobat version and the operating system you are using
Also some sample PDFs with which you are facing this issue.