The macro <tt>\setuplocalframed</tt> is no longer defined in Mark IV (08.2010).
You can use the <tt>\getparameters</tt> macro as adequate substitute.
= Trialtypesetting =
The macros for (de)activating trial typesetting (<tt>\trialtypesettingtrue</tt> and <tt>\trialtypesettingfalse</tt>) have been changed. They are no longer part of a <tt>\newif</tt> statement. The new names are <texcode>\settrialtypesetting</texcode> for activation and <texcode>\resettrailtypesetting</texcode> for deactivation.