No sooner had I released CodeSnip 4 release candidate 2 to correct a nasty bug relating to snippet display names than I read a comment in the blog about another new, and even worse, bug. Details at http://delphidabbler.blogspot.co.uk/2012/09/aaargh-another-bad-codesnip-bug-now.html
This one affects clean installs of CodeSnip, i.e. installs where there was no previous version of the program installed. The bug got introduced in beta 2 and was in RC 1 and RC 2.
I've rushed out a patch for this problem - CodeSnip 4 RC 3. You can download this from http://sourceforge.net/projects/codesnip/files/Release-4.0.0-rc.3/codesnip-exe-4.0.0-rc.3.zip/download
If you are using any of the betas or release candidates you really SHOULD update now.