Glad to hear you've got QIIME 1.9.1 installed successfully.
Regarding 1.7.0 and 1.8.0: can you check you've got the right version in the output from the
update command please?
It should look something like this:
[alces@login1(mycluster) ~]$ al gr up volatile
Updating repository: volatile
Update ... OK (At: f0df265)
f0df265 is the important bit -- it should match the latest commit of the volatile repo GitHub project.
alces gridware update will, by default, update the
main repo rather than the
volatile repo. You'll need to explicitly specify
alces gridware update volatile to ensure the correct repo is being updated.