There is too much formatting in your text. Edit chapter from table of contents page, select all text and hit Tx button in editor to strip text format and then save. You can add back in italics in the editor if you need to. @Cia, can tell you how to format text properly in Word to get clean copy and paste.
If you encounter a story with a template bug:
[[Template stories/front/story/viewChapter is throwing an error. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]
Please post a link to the chapter here. If the author is actively posting on GA, please notify that author. We have a work around to fix this until we are able to get a working patch.