As in #1873102: Libraries for "chosen" appear to be missing, I attempted to create a fresh website within a multisite installation, and got an error that implies that a library is missing. Here's the error (with part of my path anonymized):
Warning: file_get_contents(profiles/commerce_kickstart/libraries/jquery.bxSlider/jquery.bxSlider.min.js) [function.file-get-contents]: failed to open stream: No such file or directory in _locale_parse_js_file() (line 1488 of [PATHDELETED]/includes/locale.inc).
The result is that the front-page slider displays as discrete images instead. See attached screenshots.
Given the other issue, I'm starting to think that CK might do something weird with libraries in multisite installations. I'm going to try re-newing CK (i.e., replacing everything except /sites) to see if that fixes it by putting those library files back where they belong.