Inkscape requires Apple's X11 which is included in the "Optional Installs" package on the OS X install disk.
How to install:
- Drag "Portable Inkscape OS X" folder to your portable device, USB more...
- Updated to 0.44-1-universal.
- 100% standalone.
- Preference are automatically copied if desired.
- Portable Inkscape ask to quit Inkscape copy already running.