Hi Wolfgang,

With MkIV blocks are hidden by default while MkII prints them, add \keepblocks[Block]
to your document and the blocks will appear.

Using \keepblocks worked thanks.

Unfortunately, now the \reset command doesn't seem to work in mkiv (see attachment), but's ok in mkii.

Glen

-------
\defineblock[Block]
\defineenumeration[Enum][location=left,text=Test]
\setupblock[Block][before=\startEnum,after=\stopEnum]
\keepblocks[Block]

\starttext

\section{Use}

\useblocks[Block]
\reset[Enum]

\section{Define}

\beginBlock
jhdsa hdsfhj  lh dsfjh jkhasdf
sdakjhfsal sdkajhf kljsdh
\endBlock

\beginBlock
jhdsa hdsfhj  lh dsfjh jkhasdf
sdakjhfsal sdkajhf kljsdh fhlkjsad kah dkjh akjhd flkjs
lkjsad flkjh salkjhf asd
\endBlock

\stoptext