Hi all. I'm gingerly trying to switch over to LyX 2.0 (beta 1   2) and to
start using XeTeX so I can more easily access additional fonts. I'm writing
a thesis using the included thesis templates. Actually my current work uses
the template set sent out on these lists earlier in 2010, so I created brand
new sample files from the new 2.0 version to test the problems I'm about to

1. conflict with AMS package
I've found that simply activating XeTeX under *Document Settings –
Fonts*will cause parsing errors on viewing if the document also has
*Math Options – Use AMS math package* checked; eg, LaTeX Error: Command
`\Finv' already defined, etc. I think this is a known conflict between XeTeX
and the AMS package, is that right? By changing the setting to *Use AMS math
package automatically* though, these particular errors go away. Note that
this occurs in the generic default new document (*article* class) as well as
the *KOMA-script book *class that the thesis uses.

So for a 'simple' document — which has the automatic AMS math package option
checked by default anyway — this seems to fix the problem. But is that a
reasonable thing to do, or is the thesis template not initially configured
to use the auto version for good reason?

2. conflict in thesis template
Beyond that, changing to the automatic AMS math package in the thesis
document introduces new errors. In a brand new, entirely unmodified chapter
template file, XeTeX compilation now complains about the use of ' \addto
\extrasenglish{' in the preamble (used to define cross reference
identifiers). Is this another conflict between XeTeX and ... is it *hyperref
* these overrides refer to?

Would this be the appropriate moment to switch to using *refstyle* for
customised cross referencing? And is doing so a case of going and reading
that packages documentation? I can't find much in the LyX help files beyond
the fact that the option exists. One of the benefits of the hyperref
approach is not having to switch each cross ref instance to the *Formatted
reference* type...

3. custom character-style error
Finally, and this is more an annoyance than an impediment, my custom
character style module (based on info from Rob
generates an *Undefined flex inset *error: 'Flex inset TechnicalDefinition
is undefined because of class conversion from article to article' (and the
same occurs in scrbook). This only seems to get thrown if I save a change
made within Document Settings, not on view, etc. Is there something in my
module that might cause this?

#\DeclareLyXModule{thesis styles}
#Adds character styles for PhD thesis

InsetLayout    CharStyle:TechnicalDefinition
    LyxType               charstyle
    LabelString           techdefn
    LatexType             command
    LatexName             techdefn
        Family              Sans
        \newcommand*{\techdefn}[1]{{\sffamily{\mdseries #1}}}


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