It's a bug introduced with 5.4.x firmware (test the same file on PW1 with fw 5.3.9 and ToC will work fine). Now the first element in ncx ToC must not be multilevel , if it is you get that non-expandable bug. So to "fix" your book (because obviously Amazon has no intention of fixing the device/firmware bug) use Calibre ToC editor and add link for something like "Title Page" before that multilevel element.
Last edited by shamanNS; 07-11-2014 at 11:37 AM.
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