No Section TOC in the left margin

[epistecius]

I really like the msmb style, which gives the book a fresh and dynamic look.

Unfortunately, I cannot get the Section-TOC in the left margin to work.

Even the example in the ext data does not seem to generate the left margin TOC.

Without the sections in the left margin, the useability of this cool style is severely reduced.

Was anybody able to get the left margin section-TOC to work?

Thanks!