From that thread, from how I figure it a 2600 ROM packs e.g. ATARIv3.1.rar, themes, all-games.ini mods, evolved to 5200/800XL/7800/GBA/... and other customizations for CPU Overclocking etc which looks interesting.
Does it do the exact same if you go in through the Legends Flashback menu options? If so, I think one of your Intellivision folder or emulator folder are messed up. I suggest go back to your Nexus .rar file and unload those again. I mean unload /rom_iv and /emulator onto your thumb drive again to start fresh. 041b061a72