Let me update this. I realize that I must use rdmd to get execution output in ST2. So I changed "dmd" to "rdmd" in the sublime-build script, and now I get this error:
Errno 13] Permission denied
[cmd: [u'rdmd', u'/Users/chuck/UVU/4450/arrayassign.d']]
However, I can run rdmd from the command line, no problem. rdmd is in /usr/bin, by the way. I assumed if I could run it from the command one that I could run it inside ST2. Would you know how to fix this? Thanks.