Is EEPROM.h being included, or is it not being found? I've always found it useful in cases like this to put #error at the top of the header file you're including (temporarily, of course):
(EEPROM.h)
#error "Yes I just included EEPROM.h"
If you don't get the error, something is wrong with your include path or location of the header file. You could put it right before the line that defines EEPROM if you want to narrow things down.