Am 03.04.2015 um 20:02 schrieb Fabrice Couvreur <fabrice1.couvreur@gmail.com>:

With the latest version of Context Standalone, this command \filler[dots] no longer works.
Best regards,
Fabrice

\definefiller[dots][left=\dontleavehmode, right=\hskip\ZeroPoint\par]
\starttext
\dorecurse{4}{\filler[dots]}
\stoptext

You use the undefined command \ZeroPoint in your definition but you want \zeropoint.

Wolfgang