I've had this problem for a while now on Yosemite. It all started when I tried to change Alfred to reveal files with forklift rather than finder. Since I couldn't get that to work i've reverted back to finder except now both Alfred and Chrome "show in finder" just opens the file instead of revealing in finder.
I've avoided fixing it for a while by using the terminal
open /path/to/folder but that is super inefficient.
I couldn't find a similar question addressing this (frustrating) issue.