EndNote can't save a new/edited Style, Filter or Connection

This problem occures when EndNote wants to save the new/edited file to the standard folder.
A new location should be assigned manually.

• Start EndNote and click at the top on 'Edit' and then 'Preferences...'.
• At the left side, click on 'Folder Locations'.

The Styles, Filters and Connections folder can be find in the Documents/EndNote folder of the user.

If these folders don't exist, then you should create them manually.
The new folders should look like the following:

• Documents/EndNote/Styles
• Documents/EndNote/Filters
• Documents/EndNote/Connections

After creating these folders or if they already existed, continue with the following steps:

• Click on 'Select Folder'. 
• Browse to the created/existing folder and assign it to the correct folder type (Styles, Filters or Connections).
• Click on 'Apply' and then 'OK'.

EndNote should now be able to save the new/edited Style, Filter or Connection.