Problem Extracting Pages in DC "Please enter a valid page range"

It appears the problem has to do with the use or presence of sections in the page labeling. I have a set of construction drawings that has been updated several times with additional sets of sheets. Using the normal Extract function I am able to extract sheets from the original section, but I get the error message when trying to extract those from later (added) sections. Re-labeling the later sections permits me to extract the needed pages. I can also eliminate the problem by selecting the later pages, activating the Page Numbering tool (right-click and click on Page Labels...) and click the radio button next to "Extend numbering used in preceding section to selected pages". This approach may not work for you if your pages have complex page labels. In that case, use the approach described above by johnh87962111.

My workaround on this is as follows:

1.     Organize Pages

2.     on tool bar click "More" icon

3.      select 'page labels'

4.     select all pages

5.     under numbering, select 1,2, 3, 4 etc

6.     hit OK

this will renumber all the sheets in order then you can extract easily. Works well with architectural plans when they all have different numbering systems

Count the actual pages in the document say for instance you have 74 pages and you want to extract or delete pages 17 thru 26 enter the actual page number of the document 17-76 hit delete it asks if you are sure and then deletes them. i had teh same issue until i tried this method and it works for me....good luck

Do the pages in this file have labels? If so, you might need to do those

instead of the physical page numbers.