Predict NMR shifts in ChemBioDraw Ultra for MAC Operating Systems are disabled.

Predict NMR shifts in ChemBioDraw Ultra for MAC Operating Systems are disabled.

There are problems when previous files of older versions of ChemDraw remain in the Library, to avoid this problem please make a clean installation by the following way:
Delete all ChemDraw or "CS" files from previous installations, check the following folders:
~/Library
~/Library/Application Support
~/Library/Preferences
~/Library/PreferencePanes
~/Library/StartupItems
~/Library/Internet Plug-Ins
Next, remove any similarly named items you find inside the User Library within your Home Folder (Administrator user)
Finally clean the trash can and then install again