Failed to generate index: I thought i did everything right!

[ayman07]

hi everyone. i honestly thought i had mastered the creation of waypoints and TOC with calibre when converting PDF's to mobi. when i tried to do it this time i got this error:

Convert book 1 of 1 (u'A Thousand Splendid Suns')
InputFormatPlugin: HTML Input running on /Users/Ayman/Documents/eBooks/Khaled Hosseini/A Thousand Splendid Suns (8)/A Thousand Splendid Suns - Khaled Hosseini.htm
Language not specified
Creator not specified
Title not specified
Building file list...
	Found files...
		 HTMLFile:0:a:/Users/Ayman/Documents/eBooks/Khaled Hosseini/A Thousand Splendid Suns (8)/A Thousand Splendid Suns - Khaled Hosseini.htm
Parsing A%20Thousand%20Splendid%20Suns%20-%20Khaled%20Hosseini.htm ...
Parsing file u'A%20Thousand%20Splendid%20Suns%20-%20Khaled%20Hosseini.htm' as HTML
File u'A%20Thousand%20Splendid%20Suns%20-%20Khaled%20Hosseini.htm' missing <title/> element
Merging user specified metadata...
Detecting structure...
	Detected chapter: PART ONE
	Detected chapter: 1.
	Detected chapter: 2.
	Detected chapter: 3.
	Detected chapter: 4.
	Detected chapter: 5.
	Detected chapter: 6.
	Detected chapter: 7.
	Detected chapter: 8.
	Detected chapter: 9.
	Detected chapter: 10.
	Detected chapter: 11.
	Detected chapter: 12.
	Detected chapter: 12.
	Detected chapter: 13.
	Detected chapter: 14.
	Detected chapter: 15.
	Detected chapter: Part Two
	Detected chapter: 16. Kabul, Spring 1987
	Detected chapter: 17.
	Detected chapter: 18.
	Detected chapter: 19.
	Detected chapter: 20.
	Detected chapter: 21.
	Detected chapter: 22.
	Detected chapter: 23.
	Detected chapter: 24.
	Detected chapter: 25.
	Detected chapter: 26.
	Detected chapter: PART THREE
	Detected chapter: 27.
	Detected chapter: 28.
	Detected chapter: 29.
	Detected chapter: 31.
	Detected chapter: 32.
	Detected chapter: 33.
	Detected chapter: 34.
	Detected chapter: 35.
	Detected chapter: 36.
	Detected chapter: 37.
	Detected chapter: 38.
	Detected chapter: 39.
	Detected chapter: 40.
	Detected chapter: 41.
	Detected chapter: 42.
	Detected chapter: 43.
	Detected chapter: 44.
	Detected chapter: 45.
	Detected chapter: 46 .
	Detected chapter: 47.
	Detected chapter: PART FOUR
	Detected chapter: 48.
	Detected chapter: 49.
	Detected chapter: 50.
	Detected chapter: 51.
	Detected chapter: Acknowledgments
Auto generated TOC with 56 entries.
Flattening CSS and remapping font sizes...
Source base font size is 16.00000pt
Cleaning up manifest...
Trimming unused files from manifest...
Parsing stylesheet.css ...
CSSValue: Unknown syntax or no value: u' '.
CSSStyleDeclaration: Syntax Error in Property: text-align: 
Creating MOBI Output...
Generating in-line TOC...
Applying case-transforming CSS...
Parsing manglecase.css ...
Parsing tocstyle.css ...
Rasterizing SVG images...
Converting XHTML to Mobipocket markup...
Serializing markup content...
Compressing markup content...
Generating CTOC ...
Indexing navPoints ...
	nodes 12 and 13 have a gap:
	node 13 offset: 0x23A7A 	 node 12: offset: 0x23A7A length: 0x37C8
Failed to generate index
pbreak = 0x16E
Serializing images...
MOBI output written to /var/folders/OF/OFrE7AQHHKeE59umq6hvLU+++TI/-Tmp-/calibre_0.6.0b8_sJdsYF.mobi

i will open a ticket on the site if no one can help me. i wonder if this is something i did or something the app is doing. any help would be appreciated thanks!

[kovidgoyal]

Open a ticket and attach the file

[ayman07]

done. hope its fixed soon.