Hi all,
I finally got around the intallation of context minimals. Thank you for those who helped. I ran my old tex files (in spanish) and found that \~n is not working now.
It should create an n with a tilde on top, but what happens is that there is no
letter printed at all.

What is the fix for this?  Any switch? 
(I know I could use \char but I am looking for a more elegant solution)

thank you
Ciro