> Jaroslav Hajtmar <mailto:hajtmar@gyza.cz>
> 26. April 2016 um 16:02
> Hello ConTeXist.
>
> I have just installed the latest version of ConTeXt standalone. When I 
> compiled an my old source code, I received an error:
>
>
> ! You can't use `\Ustopmath' in restricted horizontal mode! You can't 
> use `\Ustopmath' in restricted horizontal mode! You can't use 
> `\Ustartmath' in restricted horizontal mode! Inline math should end 
> with \Ustopmath
>
>
> This strange error is caused something in my extensive library for 
> handling CSV files. I'm not sure why, because in library I am not use 
> with any mathematical mode.
>
> I am sorry, but at this moment I am not able to reveal the mistake to 
> be able make a minimal example. Some of the older versions (not 
> necessarily penultimate) worked without problems. Is there someone who 
> help me start look from which point look for a mistake in my code 
> library? Thanks for the information.
It’s possible you’re using a math command without enabling math mode or 
you use
the a wrong catcode regime (where _ and ^ work only in math) but without 
a example
there is not much to say.

Wolfgang