I have been using these presets without any problem until recently. Half will work and half won't.
You may want to discuss that with the people who have provided those presets.
Like the dodge and burn or spot healing. Anyone know how to fix this?
With the information you have provided?
Please read these (restoring Preferences after making sure all customized presets like Actions, Patterns, Brushes etc. have been saved might be of special interest):
