Hello Luca, where do you teach?
Look into gluon/admin.py app_install. There is a try...except. Try replace except Exception: if did_mkdir: rmtree(path) return False with except Exception: import traceback print traceback.format_exc() if did_mkdir: rmtree(path) return False Also if you open a ticket about this, I will make sure better errors are reported via admin. I have apps that allows students to upload projects w2p and bulk install them, bulk register and test them. Need polishing. Remind me in a couple of weeks and I will be happy to share them. Massimo On Friday, 9 November 2012 00:08:32 UTC-6, Luca wrote: > > I am using web2py to teach a class on web development, and sometimes the > students submit .w2p packages as assignments that cannot be loaded. When I > or the TAs try to load them, we get the "unable to install application" > message. > > What can cause this message? > > The packages open without problem when I tar xfvz them, so it's not clear > to me what the problem is. > > Many thanks! > --