inDesign/epub -- TOC missing subchapters/appears as dropdown
I am having the following irritating problems:
1) After exporting to EPUB, my TOC appears as a series of drop-down menus (indicated by a + sign) in Digital Editions. Sometimes there are extra spaces between the chapter name and the + sign that, if clicked, reveals the subchapters.
2) Once I convert to mobi, some of the subchapters disappear ENTIRELY.
Some important info:
1) I'm using CS5.5, but the original inDesign files/inDesign book were made in CS5
2) I'm using a Mac
3) I used Calibre to convert from EPUB to mobi
4) My TOC Style, made using paragraph styles, has the following structure:
Chapter Subheading (subchapter)
Any and all advice appreciated!!