message "This operation is not allowed, since scanning is in progress."

[lawrencel36525322]

mac OS Sierra, Dell 2155 cdn printer/scanner/copier Acrobat Pro dc was working AOK. Now scan get message "This operation is not allowed, since scanning is in progress." Acrobat Pro dc uninstalled, reinstalled. Problem continued. Help!!!

[Lovekesh Garg]

There seems some scanning process going on in background. Please restart your machine once. It should resolve the issue.

Thanks.

[TJK999]

No such luck. I have tried everything to include multiply installs and updates.

The screen to select you scanner does not appear when you try to edit your presets which clouds the issue even more!