On Mon, 13 Apr 2009, Florian M. Baudach wrote:

> Dear all,
>
> I need german Umlaute in my formulas of my master thesis.
>
> I used \ddot{a} for ä. It had worked fine until I updated Context
> yesterday :-(. Since that update I only get an crossed a with an accent,
> but no ä.

Here

\starttext
$\ddot a$
\stoptext

works fine (see attached pdf). I am using

ConTeXt  ver: 2009.04.13 14:45 MKII  fmt: 2009.4.13  int: english/english

Can you create a minimal example that fails?

Aditya