On Sun, 25 Sep 2011, Wolfgang Schuster wrote:

>
> Am 25.09.2011 um 15:08 schrieb R. Ermers:
>
>> Thanks for all your replies!
>>
>> I changed the superscript e into \high{e}. There is one other math item: $\frac1{40}$ in the whole text.
>>
>> I am using mkiv.
>> Until the recent update the document (90 pp.) was processed fine.
>>
>> I add a minimal example below.
>
> 1. The example runs without errors on my machine.
> 2. This example *isn’t* minimal.
> 3. There are a few unnecessary things in your code.

An alternative is to use

   \definesymbol[1][\textbullet]

As an added benefit, it gives a better output when exporting to xhtml.

Aditya