This is pdfTeXk, Version 3.141592-1.40.3 (Web2C 7.5.6) (format=pdflatex 2009.11.13) 20 OCT 2011 10:38 entering extended mode %&-line parsing enabled. **Section8-5.tex ! Emergency stop. <*> Section8-5.tex *** (job aborted, file error in nonstop mode) Here is how much of TeX's memory you used: 3 strings out of 256216 117 string characters out of 1917071 48804 words of memory out of 1500000 3390 multiletter control sequences out of 10000+200000 3640 words of font info for 14 fonts, out of 1200000 for 2000 645 hyphenation exceptions out of 8191 0i,0n,0p,1b,6s stack positions out of 5000i,500n,6000p,200000b,15000s ! ==> Fatal error occurred, no output PDF file produced!