On 2012-01-05, Wolfgang Engelmann wrote:
> I use
> \mathrm{K}^{+}
> to get an upright K^+ (K-Ion) (and other items such as units)
> and guess the following message on the terminal from which I start lyx has
> to do with it:
> [Unknown [sub [mathrm [char E mathalpha]] [char e mathalpha][char x
> mathalpha]]]
> Do I have to include some package or use another method?
I cannot reproduce this. No messages appear on my terminal (LyX svn on
Debian Linux started from x-terminal emulator).
Do the messages appear:
* when typing the commands in a math-box
* when selecting the text \mathrm{K}^{+} and converting to math with
Ctrl-m
* when opening a file containing this math, or
* when compiling?
Maybe a minimal example file could help further (e.g. to see whether it
is not *missing* a package but *using* a package that creates the
problem).
Günter