Try to edit the selection after enabling the Shuffle option, remove the 'Allow selected spread (PDF)' and see if the error page displays. Error pages Adobe Pro delete. One or more pages are in use One or more pages are in use and could not be deleted We have found that this occurs when a document is selected at one point and then deleted. When you try to edit the selection (or otherwise delete the document) the error 'Error pages Adobe Pro delete' will appear. Solved: The solution here seems to be a case of trying to edit or delete the selected area after enabling the Shuffle option. One or more pages are in use and could not be deleted. One or more pages are in use and could not be deleted Open a PDF file Save it under a different name; Try to delete one or more pages. You'll get this error: “One or more pages are not in use This is because you have selected a text page and your printer has stopped, and one or more pages which have been marked as 'in use' are still being printed. If you're using an Epson Stylus printer then make sure the page size is set to the maximum and set the ink level to 0. Error pages Adobe Pro delete. One or more pages are not in use If the first time you enter your email address, you get this error: Email address is already registered. No email address was registered. Try to enter your email address first time You'll get this error Open a PDF file Save it under a different name; Try to delete one or more pages. Solution 1: Save the document In Adobe Acrobat you will see this screen: If you enter the email address of the account that you're using on your computer, then you'll be prompted to enter an email address for using your account with Adobe. Solution 2: Check the password If you enter the wrong password you'll get this error: You need to enter your account login info and password before you can download the document. Solution 3: Disable Shoot This works for me, I had enabled Shoot which works to make the print view more robust, but it is annoying to type my password and hit Save. So, I changed the setting so that I can't select the print view.