mozilla/addon-sdk — pull request #248 by KWierso (2011-10-18 01:54:46+00:00)
Title: Bug 669552 - Warn user if activate script is run outside of the SDK root directory. (Windows-only)

This adds a warning to the activate.bat file when the script fails to find the python-lib directory directly within the current working directory, and then it jumps to the end of the script so that no additional SDK code is run.