Could someone please enlighten me as to the correct method of resolving this error?
My LyX file references a number of fonts however I have not been able to successfully convert to PDF for some time due to various reasons. I have solved them all bar this one, and am quite stumped. I don't recall changing any fonts since the last time I successfully output to PDF (albeit back on 1.6, this is now 2.0rc2). Other than going in to the LyX file manually and replacing all font references with a 'known good' one, is there any way to know which line this error actually references? As error messages go, this one seems pretty opaque. Full output of progress/debug messages follow... 12:30:55.079: Previewing ... 12:30:55.108: (buffer-view: Ctrl+R) 12:30:55.284: xelatex "story.tex" 12:30:55.318: This is XeTeX, Version 3.1415926-2.2-0.9997.4 (TeX Live 2010) 12:30:55.319: restricted \write18 enabled. 12:30:55.468: entering extended mode 12:30:55.472: (./story.tex 12:30:55.475: LaTeX2e <2009/09/24> 12:30:55.477: Babel <v3.8l> and hyphenation patterns for english, dumylang, nohyphenation, pi 12:30:55.478: nyin, ukenglish, usenglishmax, loaded. 12:30:55.480: 12:30:55.934: 12:30:55.936: ** WARNING ** Failed to convert input string to UTF16... 12:30:56.070: ** ERROR ** Invalid font: -1 (8) 12:30:56.072: 12:30:56.073: Output file removed. 12:30:56.082: The process crashed some time after starting successfully. 12:30:56.119: xelatex "story.tex" 12:30:56.156: This is XeTeX, Version 3.1415926-2.2-0.9997.4 (TeX Live 2010) 12:30:56.161: restricted \write18 enabled. 12:30:56.311: entering extended mode 12:30:56.312: (./story.tex 12:30:56.312: LaTeX2e <2009/09/24> 12:30:56.313: Babel <v3.8l> and hyphenation patterns for english, dumylang, nohyphenation, pi 12:30:56.313: nyin, ukenglish, usenglishmax, loaded. 12:30:56.314: 12:30:56.774: 12:30:56.775: ** WARNING ** Failed to convert input string to UTF16... 12:30:56.909: ** ERROR ** Invalid font: -1 (8) 12:30:56.910: 12:30:56.910: Output file removed. 12:30:56.920: The process crashed some time after starting successfully.Error: Cannot view file ---------------------------------------- File does not exist: /tmp/lyx_tmpdir.M22972/lyx_tmpbuf0/story.pdf 12:30:58.133: Error while previewing format: pdf4 - Walter