# [OS X TeX] Minion Pro questions

Michael Sharpe msharpe at ucsd.edu
Mon Jul 9 07:53:37 CEST 2012

```On Jul 8, 2012, at 10:05 PM, Richard Seguin wrote:

> I get the error message
>
> \reserved at b ->\relax
>                   \ifmmode \else \non at alpherr \mathbb  \fi \use at mathgroup...
> l.11 \$\mathbb{F}
>
> I had \boldsymbol within a macro and no where else. (That particular macro was created years ago.) I removed it, and now instead of producing an error on a \mathbb within the first few pages, the LaTeX compiler processes probably hundreds of \mathbb before stopping on a \mathbb on page 67 with a similar error message.