Been using Clippings for several years now. Recently cam up with a way to share/update copies of it on 3 machines I use. If you use Dropbox, make a common folder between the machines you require it on and set this folder as the default clippings .clipbak data source. Any changes are made available across all machines!
All those permissions are needed for Clippings to function. Go to the following page to learn more about the meaning of those permissions, and why they are needed: http://aecreations.sourceforge.net/clippings/permissions.php