I upgraded to 1.4.6 and now the gift certificates won't work at all. It just refreshes the page adding or subtracting the GC amount each time but it won't go to confirmation. I temporarily disabled it.

Before the upgrade they worked normally but I had an issue with $0 totals using coupons - it turns out it is a built in Zen Cart thing. Now the GC do not work.

Thank you for any assistance you can provide.

Blessings,
Krisann