Acrobat Pro DC Version: 15.23.20053.211670 Steps: 1. Open acrobat 2. Tools and select combine files 3. Add files 4. Select 1st file (1.17 MB PDF containing text and simple black and white drawings) 5. Select 2nd file (708 KB PDF containing text and simple black and white drawings) 6. Select combine First document processes then second document starts and immediately crashes. Acrobat does not ask if I want to recover my last session anymore. It did for the first several crashes. I cannot share the files on here. If there is a confidential way of sending them, I can do that. Both of the files are from the same book, just different chapters. The issue only arises when combing pdf files that have been edited in acrobat and have blank pages. This happens if one or more of the files have the blank pages. ... View more

I attached a screen shot with the error message. Using the link above, I downloaded and used the cleaner tool. After this, I downloaded acrobat pro DC and received the same message (attached). ... View more