Another, free, option is C-Kermit but I don't know if it's been updated recently.
http://www.columbia.edu/kermit/ck80.html
They request that you buy the book to fund development, or used to.
Let's see... It looks like the last OS X binary was for PPC. The source is available, but... http://www.columbia....rmit/ckdaily.html
Best of luck. I hope it doesn't cost much $$$ or time to solve this problem.
Cheers,
Scott.