Of course django-admin-bootstrapped IS added in INSTALLED_APPS, otherwise runserver wouldn't complain about the missing module. Please, try what @zymud said and post pip freeze | grep bootstrap output. Anyway, if the module works in pyCharm, i think you have a PATH issue...
Make sure that the directory containing the django-admin-bootstrapped module is in your PYTHONPATH environment variable.
Ps. When dealing with installation issues, it would be great to know something about the system (OS, Python version, steps you made to install the module).
EDIT:
I just noticed you are using virtualenv... did you activate the virtualenv (workon VIRTUAL_ENV_name) before installing django-admin-bootstrapped with pip?