Ben,
The .elf file that you're trying to load is for JTAG debugging purposes. Please try a load elf command on one of the .elf files that you download under the category "LogicLoaderâ„¢ Bootloader/Monitor" in the 'my account' section of Logic's webpage. I would reccomend the file titled "LogicLoader for the LH7A400-10". I think you'll have more success there, here's a link, let me know how it works out.
http://www.logicpd.com/auth/downloads.php?model=SDK-LH7A400-10
Regards,