Can't find MIT/GNU Scheme in Applications after install I installed program called "MIT/GNU Scheme" to /Applications. I can run it via Spotlight, but it says it's from unidentified developer. So I should find it in the folder and right click open, but it's not in the folder. Terminal autocomplete cannot find it either. If I install it again, it says it is there and asks whether to replace the old file. Read somewhere it might be 32bit version on my 64bit system, but I specifically installed 64bit version. I am running OS X 10.10.4
You can confirm where it was installed in /Applications by using Terminal.app:

cd /Applications
ls -lt | grep -i cheme


This should print the name of the directory where it was installed (which should be MIT:GNU Scheme). You can access it from the command-line by adding the following directory to your PATH: /Applications/MIT\:GNU\ Scheme.app/Contents/Resources.