Hi Cory,
You can't directly display the choices from a multiple response item in the wording of subsequent questions; that only works for scale or fill-in-the-blank items (as you found out). If you wanted to use participants' choices from a multiple response item, you could try using a resonses.xls file. That way, you can create a calculate variable that would use the input from the relevant choices of the multiple response items to display the kind of response you would like. Take a look at the Advanced Features section of the MediaLab manual for information about how to use the responses.xls file and let me know if you have any questions.
Jason Reed
Empirisoft Software Support Specialist