Hi All, File "virtualenv-1.5\virtualenv.py", line 1645, in <module> main() File "virtualenv-1.5\virtualenv.py", line 556, in main prompt=options.prompt) File "virtualenv-1.5\virtualenv.py", line 645, in create_environment site_packages=site_packages, clear=clear)) File "virtualenv-1.5\virtualenv.py", line 769, in install_python copy_required_modules(home_dir) File "virtualenv-1.5\virtualenv.py", line 723, in copy_required_modules dst_filename = change_prefix(filename, dst_prefix) File "virtualenv-1.5\virtualenv.py", line 704, in change_prefix assert relpath[0] == '/' AssertionError Looks like a classic non-cross-platform piece of code, right? Chris -- Simplistix - Content Management, Batch Processing & Python Consulting - http://www.simplistix.co.uk