Hi,

Nath is a very complex module, easily broken. If you can privately send me your preamble we might be able to find what was breaking it. Or you can try it yourself: move it up line by line until delimiters don't work anymore: you'll find what makes it bomb :)

OK, I'll try that. At the moment I'm having all kinds of issues with

Let me point out, mainly for the record, that ConTeXt / nath does not seem to work properly under MikTeX. The following script works fine with Linux / teTeX, but with MikTeX, the in-line versions of the math is wrong. -gary ------------------------------------------ \usemodule[nath] \starttext $ y = (1 + \frac{}{a}{b}) $ $ y = (1 + \frac{a}{b}) $ $ y = (1 + a\frac{b}{c}{d})$ $$ y = (1 + \frac{}{a}{b}) $$ $$ y = (1 + \frac{a}{b}) $$ $$ y = (1 + a\frac{b}{c}{d})$$ \stoptext