Jack

Hey everybody! I need some help please. I have worked my way through the NES library and started today on the Super NES library. I can not get any game to load or play with the Super NES and none of my games will load and play for NES now. I am uising the recommended emulators for both. When I try to load a game for NES it tells me that "the file you've specified for the emulator application path was not found." All of my NES games worked perfectly before I moved onto the Super NES. When I try to load an Super NES game it says ""[bad checksum] LoROM, Corrupt, ROM, NTSC, SRAM:0Kbits, ID:, CRC32:00000000 Any help you folks can give me I would be very grateful!!!! Thanks in advance!!!