[NTG-context] spanish tilde-n lost

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