Adobe never officially released a portable version of Illustrator CS6. Any portable build is unauthorized and violates Adobe’s EULA. Using it for commercial work could expose you to legal liability.
Using such software is a violation of copyright laws and Adobe's Terms of Service. Official System Requirements (for Reference) Adobe Illustrator CS6 Portable Multi
This is the most important section of this article. Adobe never officially released a portable version of
: The ability to apply linear, radial, or elliptical gradients directly to strokes. or elliptical gradients directly to strokes.