I wrote a test program for v1.3.9h to allow Discount Coupons with a combo of Free Shipping and Amount or Percentage ...

You can try the test files from this thread:
http://www.zen-cart.com/showthread.p...for-v1-3-9h%29

and see if that works for you ...

Be sure to test completely ... this is just a test version for these code changes to do Discount Coupon Combinations ...