I got the same error when trying to access the appadmin controller
Traceback (most recent call last): File "/home/rochacbruno/Dropbox/cursodepython/web2py/gluon/restricted.py", line 181, in restricted exec ccode in environment File "/home/rochacbruno/Dropbox/cursodepython/web2py/applications/init/controllers/appadmin.py" <http://127.0.0.1:8000/admin/edit/init/controllers/appadmin.py>, line 11, in <module> import gluon.contenttype File "/home/rochacbruno/Dropbox/cursodepython/web2py/gluon/custom_import.py", line 70, in _web2py__import__ locals, fromlist, level) File "/home/rochacbruno/Dropbox/cursodepython/web2py/gluon/custom_import.py", line 46, in _web2py__import__dot result = result or new_mod.__dict__[name] KeyError: 'gluon' -- Bruno Rocha [ About me: http://zerp.ly/rochacbruno ]