I just tried to use the Class Rename refactoring in IDEA Ultimate 11.1.4 in OS X 10.8.2 on 2 different machines in two different projects, to no avail: the usual popup does not show up, nothing happens. I can rename variables though... Method rename does not work either. Both project use Mercurial btw. I did not see that problem in 11.1.3.
Neither Retarting IDEA nor rebuilding indices did change that. Any ideas?