Summary
Uninstalling an upgraded Laserfiche Quick Fields 7.x can remove or unregister files shared by Laserfiche Scanning 7.0.x. Without those files, Laserfiche Scanning 7.0.x cannot operate correctly.
Cause
Uninstalling Laserfiche Quick Fields 7.x can uninstall LFAPICOM70 and unregister LFDisplay.
Resolution
Run the Laserfiche Client 7.0.x and Laserfiche Scanning 7.0.x installations and choose the repair option to resolve this issue.