Thanks both.... Explanations perfectly clear. Also you make me discover 
there was a 'pgirmess-manual.log', with error lines detected and 
commented, indeed... (shame on me!!!) which would have been of great 
help during the past decade... The misuse of _ should be the origin.

I should manage with, now.

Thank again,

Patrick

>The general answer is to look through the (often very long) *.log file in 
>the *.Rcheck directory until you find the problem. That will typically 
>give you a line number in the *.tex file, which shows not only where the 
>error occurred, but the *.log file entry often shows what it is. My 
>typical errors are using LaTeX special symbols, and most often having 
>unprotected $ and _. I see quite a lot of _ below in \value{}, so I'd try 
>\_ there first.
>
>Roger
>


Berwin A Turlach a écrit :

>G'day Patrick
>
>  
>
>>>>>>"PG" == Patrick Giraudoux <patrick.giraudoux@univ-fcomte.fr> writes:
>>>>>>            
>>>>>>
>
>    PG> \value{ A list with the following items: \item{AIC}{a
>    PG> data.frame including LL, the maximized log-likelihood; K the
>    PG> number of estimated parameters; N2K, number of observations/K;
>    PG> AIC, the Akaike index criterion; deltAIC, the difference
>    PG> between AIC and the lowest AIC value; w_i, the Akaike weights;
>w_i is LaTeX notation for "w subscript i" and needs to be inside a
>maths environment otherwise there will be a LaTeX error.  Change this
>to, e.g. \eqn{w_i}
>
>    PG> AICc, the second order Akaike criterion; deltAICc, the
>    PG> difference between AICc and the lowest AICc value; w_ic, the
>w_ic is LaTeX notation for "w subscript i followed by c".  This needs
>to be insite a maths environment to avoid a LaTeX error.  But I
>presume that your intention is actuall "w subscript {ic}", thus change
>this to, e.g. \eqn{w_{ic}}
>
>HTH.
>
>Cheers,
>
>        Berwin
>
>PS:  Would make life simple for checker if you sent along the .log
>     file in future. :)
>
>  
>

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