Michael Green wrote: 

> I would like to have a list of references sorted alphabetically by 

> author surnames. 

> 

> My environment file has \setupbibtex[sort=author] and 

> \setuppublications[sorttype=bbl] 

You probably have two \setupbibtex commands then, and that is 

currently not allowed. 

The \setupbibtex command with the database= line wins, and if that 

one doesn't have a sort=, the default cont-no.bst will be used. 

Best wishes, 

Taco