I would be very surprised it it was actually closed, considering it's popularity. I live nearby, I'll see if I can scope it out.
In the meantime, have you tried the Cafe Con Leche and sandwiches at Cafeteria de Pancho around the corner? Their CCL has long been my favorite in Chicago and the food is pretty good (if a bit greasy). There are occasional language barriers, but they have a very friendly and accommodating staff and, on occasion, you will see MLB players hanging out there w/the owner.
Cafeteria de Pancho
2200 N. California Ave
Chicago, IL 60647
(773) 772-7811
http://www.dropby.com/indexLF.html?content=/CafeteriaPancho/menu.html
"Baseball is like church. Many attend. Few understand." Leo Durocher