When trying to use the Adobe PDF printer sometimes in the full version of Adobe Acrobat, I sometimes run into this error “Adobe PDF creation cannot continue because Acrobat is not activated”, even though my version is fully activated.
The Adobe site runs you through a laundry list of things to repair, or tells you that your software is not activated, but here is a trick that always works for me:
1. Pull up Windows Task Manager by either right clicking the task bar and selecting Task Manager, hitting Control-Alt-Delete and clicking Task Manager, typing taskman in the run command in XP, etc.. however you get there doesn’t matter.
2. On the Processes tab, Click on Image Name at the top to sort the list alphabetically. Look for Acrobat.exe and acrotray.exe, highlight each of them and click End Process on each.
3. Once each process is gone, try to print to the Adobe PDF printer again and it should work this time.