Okay! Thanks for all the help, the new installation loaded yt.mods for me (other checks will have to wait for tomorrow)!
For anyone who is interested, here are two things I thought were sort of strange in the installation:
1) on my first attempt at bash install_script.sh, the installation failed with the message below:
Installing BZLIB
Installing ZLIB
Installing PNG
Installing FreeType2
Installing HDF5
Installing SQLite3
Installing Python. This may take a while, but don't worry. yt loves you.
Installing mercurial-2.7
Setting YT_DIR=/u/stonnes/Installs/yt-x86_64/src/yt-hg/
Installing distribute
Installing pip
Installing numpy-1.7.1
Installing matplotlib-1.3.0
Installing ZeroMQ
********************************************
FAILURE REPORT:
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CXXLD test_invalid_rep
CXX test_msg_flags.o
CXXLD test_msg_flags
CXX test_connect_resolve.o
CXXLD test_connect_resolve
CXX test_connect_delay.o
test_connect_delay.cpp:260:2: error: no newline at end of file
make[1]: *** [test_connect_delay.o] Error 1
make[1]: Leaving directory `/u/stonnes/Installs/yt-x86_64/src/zeromq-3.2.3/tests'
make: *** [install-recursive] Error 1
********************************************
********************************************
Failure. Check /u/stonnes/Installs/yt-x86_64/yt_install.log. The last 10 lines are above.
This was easily fixed by just adding a line at the end of the file. I am not sure if it was my computer that was the problem, or if a recent change is going to make this fail for other people, too.
2) This initial set-up list looks normal, but it seems strange that for *almost* everything =1 means the installation will happen, EXCEPT Rockstar.
INST_ZLIB = 1 so I will be installing zlib
INST_BZLIB = 1 so I will be installing bzlib
INST_PNG = 1 so I will be installing libpng
INST_FTYPE = 1 so I will be installing freetype2
INST_SQLITE3 = 1 so I will be installing SQLite3
INST_HG = 1 so I will be installing Mercurial
INST_ENZO = 0 so I won't be checking out Enzo
INST_PYX = 0 so I won't be installing PyX
INST_SCIPY = 0 so I won't be installing scipy
INST_0MQ = 1 so I will be installing ZeroMQ
INST_ROCKSTAR = 0 so I will be installing Rockstar
-Stephanie